{"title":"Old European Cut Diamond Rings","description":"\u003cp\u003eHand-cut before modern precision, Old European Cut diamonds are celebrated for their broad fire, open culets, and unmistakable antique charm. Discover authentic Victorian, Edwardian, and Art Deco rings chosen for their craftsmanship, history, and enduring beauty.\u003c\/p\u003e","products":[{"product_id":"antique-belais-diamond-ring","title":"Antique Belais 18K White Gold Old European Cut Diamond Filigree Ring","description":"\u003cp\u003eThis is a true Belais original—an early white gold ring from the dawn of the Art Deco era, when design began to move toward structure, balance, and precision. The piece is defined by its composed, architectural presence, centered around an Old European cut diamond set within a clean octagonal frame.\u003c\/p\u003e\n\u003cp\u003eThere’s a quiet confidence to this ring. The diamond draws you in rather than overwhelms, its broad, hand-cut facets producing a softer, more dimensional light. It’s not just sparkle—it’s depth—subtle, layered, and constantly shifting as it moves.\u003c\/p\u003e\n\u003cp\u003eThe architecture is where this ring sets itself apart. Intricate hand-cut filigree flows through the shoulders and gallery, lightening the structure while adding detail at every angle. This is craftsmanship that simply doesn’t exist in modern cast pieces.\u003c\/p\u003e\n\u003cp\u003eThe faint “B” preceding the clearly struck LAIS 18K hallmark confirms this as a genuine Belais Brothers ring—an original example of early American white gold at a time when the material itself was still an innovation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAt a Glance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAuthentic Belais Brothers ring — LAIS 18K hallmark \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCirca 1915–1925, \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/how-to-identify-authentic-art-deco-jewelry\"\u003eArt Deco\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/old-european-cut-diamonds-explained\"\u003eOld European cut diamond\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eApprox. 5 mm diameter in setting\u003c\/li\u003e\n\u003cli\u003e18K white gold\u003c\/li\u003e\n\u003cli\u003eOctagonal bezel with hand-cut filigree  \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaker:\u003c\/strong\u003e Belais Brothers (Hallmarked LAIS, faint “B” prefix)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal:\u003c\/strong\u003e 18K White Gold (Stamped)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEra:\u003c\/strong\u003e Circa 1915–1925\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter Stone:\u003c\/strong\u003e Old European Cut Diamond\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEstimated Size:\u003c\/strong\u003e ~5 mm diameter (in setting)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEstimated Carat Weight:\u003c\/strong\u003e ~0.35–0.50 ct (approximate)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSetting:\u003c\/strong\u003e Octagonal bezel with filigree gallery\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Size:\u003c\/strong\u003e 6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 2.7g\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis is an authentic Belais Brothers ring, showcasing the refined craftsmanship and early white gold innovation the maker was known for.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Diamond:\u003c\/strong\u003e The center stone exhibits the defining characteristics of an Old European cut, including a visible open culet, higher crown, and broad facet pattern typical of hand-cut diamonds from the early 20th century. The light return is softer and more dimensional than modern cuts, offering depth rather than sharp brilliance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Setting:\u003c\/strong\u003e The diamond is framed within a structured octagonal bezel, giving the ring a balanced architectural presence. This design reflects the transition from the flowing forms of the Edwardian era into the more geometric influence of early Art Deco.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Shoulders:\u003c\/strong\u003e The shoulder design features an elongated, organic pattern that can be interpreted as a subtle wheat motif—symbolically associated with prosperity and abundance. This type of naturalistic detailing is occasionally seen in transitional pieces from the late Edwardian to early Art Deco period.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Craftsmanship:\u003c\/strong\u003e Intricate hand-cut filigree runs throughout the gallery and shoulders, allowing light to pass through the setting while maintaining strength. Slight irregularities in the piercings are consistent with hand fabrication and are a hallmark of authentic antique construction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Hallmark:\u003c\/strong\u003e The stamp “LAIS 18K,” along with a faint preceding “B,” is consistent with Belais Brothers markings. This serves as a key indicator of authenticity and adds to the ring’s collector appeal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003cbr\u003eVery good antique condition. Light surface wear consistent with age. Filigree remains intact. Diamond is secure. No major structural issues observed.\u003c\/p\u003e","brand":"The Tera Collection","offers":[{"title":"Default Title","offer_id":52021111685431,"sku":null,"price":1250.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/8889\/3239\/files\/18K_Art_Deco_Belais_Ring.jpg?v=1787224504"},{"product_id":"vintage-diamond-star-bezel-ring-14k-white-gold","title":"Late Art Deco \/ Early Retro 14K White Gold Diamond Star Bezel Engraved Solitaire Ring","description":"\u003cp\u003eThis is a true vintage original—an early 14K white gold ring from the \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/how-to-identify-authentic-art-deco-jewelry\"\u003elate Art Deco\u003c\/a\u003e to early Retro transition, likely dating to the late 1930s to early 1940s. It reflects a moment when design began softening from strict geometry into more refined, wearable forms. The piece is defined by its balanced, intentional presence, centered on an old European-cut diamond set within a distinctive star-shaped bezel.\u003c\/p\u003e\n\u003cp\u003eThere’s a quiet confidence to this ring. The diamond draws you in rather than overwhelms, its compact proportions producing a crisp, controlled brilliance. It’s not just sparkle—it’s precision—clean, focused, and refined as it catches the light.\u003c\/p\u003e\n\u003cp\u003eThe architecture is what sets this ring apart. The star-shaped bezel introduces a structured, geometric frame that gives the stone presence beyond its size, while fine hand engraving along the band adds subtle texture and depth. The result is a piece that sits naturally between two design periods—structured, but understated.\u003c\/p\u003e\n\u003cp\u003eThe ring shows characteristics consistent with die-struck construction and hand finishing, contributing to its crisp detail and durable form—hallmarks of higher-quality production from the period.\u003c\/p\u003e\n\u003ch2\u003eAt a Glance\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAuthentic late Deco \/ early Retro diamond solitaire — star bezel with engraved band\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCirca late 1930s–early 1940s\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/old-european-cut-diamonds-explained\" target=\"_blank\" rel=\"noopener\"\u003eOld European Cut Diamond\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eApprox. 3.5 mm center stone \u003c\/li\u003e\n\u003cli\u003e14K White Gold \u003c\/li\u003e\n\u003cli\u003eStar-shaped bezel with hand engraving\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaker:\u003c\/strong\u003e Unknown\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal:\u003c\/strong\u003e 14K White Gold\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEra:\u003c\/strong\u003e Circa late 1930s–early 1940s\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter Stone:\u003c\/strong\u003e Old European Cut\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEstimated Size:\u003c\/strong\u003e Approx. 3.5 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEstimated Carat Weight:\u003c\/strong\u003e Approx. 0.15–0.20 ct\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSetting:\u003c\/strong\u003e Star Bezel \/ Solitaire\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Size:\u003c\/strong\u003e 7.75\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.9 grams\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDetails\u003c\/h2\u003e\n\u003cp\u003eThis is an authentic vintage solitaire, reflecting the transition between late Art Deco precision and more wearable early Retro design.\u003c\/p\u003e\n\u003ch3\u003eThe Diamond:\u003c\/h3\u003e\n\u003cp\u003eThe diamond is an Old European Cut that presents a bright, lively appearance with a clean, balanced sparkle. Its size favors refinement over scale, offering a subtle but confident presence.\u003c\/p\u003e\n\u003ch3\u003eThe Setting:\u003c\/h3\u003e\n\u003cp\u003eThe star-shaped bezel is the defining feature—geometric and intentional, enhancing the diamond visually while providing a secure, protective setting.\u003c\/p\u003e\n\u003ch3\u003eThe Shoulders:\u003c\/h3\u003e\n\u003cp\u003eThe band features fine hand engraving, adding texture and character without distracting from the center stone. The detailing remains crisp and well-defined.\u003c\/p\u003e\n\u003ch3\u003eThe Craftsmanship:\u003c\/h3\u003e\n\u003cp\u003eThe ring shows the density and sharpness associated with die-struck construction, combined with hand finishing. This results in a level of durability and detail not typically found in modern cast pieces.\u003c\/p\u003e\n\u003ch3\u003eThe Hallmark:\u003c\/h3\u003e\n\u003cp\u003eThe ring is unmarked but tests as 14K white gold. The construction and materials are consistent with the stated period.\u003c\/p\u003e\n\u003ch2\u003eCondition\u003c\/h2\u003e\n\u003cp\u003eVery good vintage condition with well-preserved detail.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLight surface wear consistent with age\u003c\/li\u003e\n\u003cli\u003eDiamond is secure and well-set\u003c\/li\u003e\n\u003cli\u003eEngraving remains visible and well-preserved\u003c\/li\u003e\n\u003cli\u003eBand shows light wear but no significant thinning or structural concerns\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"The Tera Collection","offers":[{"title":"Default Title","offer_id":52066579906871,"sku":null,"price":975.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/8889\/3239\/files\/Antique_14k_White_Gold_Diamond_Engagement_Ring.png?v=1778745376"},{"product_id":"art-deco-diamond-ring-blue-sapphire-18k-white-gold","title":"Art Deco Diamond \u0026 Sapphire Filigree Ring in 18K White Gold","description":"\u003cp\u003eThis is an original Art Deco ring, likely dating to the 1920s–1930s, when jewelry design shifted toward structure, symmetry, and controlled geometry. The piece is defined by a composed, architectural layout centered on an \u003ca href=\"Old%20Cut%20Diamonds:%20The%20Complete%20Guide%20to%20Antique%20Diamond%20Cuts%20\u0026amp;%20Types\"\u003eOld European-cut diamond\u003c\/a\u003e set within a square frame.\u003c\/p\u003e\n\u003cp\u003eThe design's restraint gives it presence. The diamond sits firmly within its setting, its hand-cut facets producing a softer, more dimensional light. It does not rely on brightness alone—it carries depth, with subtle shifts as it moves.\u003c\/p\u003e\n\u003cp\u003eThe surrounding elements are deliberate. Marquise-shaped blue stones are set into balanced, mirrored forms on each side, introducing contrast without disrupting the structure. Fine engraving and milgrain detail continue along the shoulders, reinforcing the ring’s architectural clarity.\u003c\/p\u003e\n\u003ch2\u003eAt a Glance\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAuthentic Art Deco diamond ring\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCirca 1920s–1930s\u003c\/li\u003e\n\u003cli\u003eOld European Cut Diamond, approximately 4.5 mm\u003c\/li\u003e\n\u003cli\u003eEstimated 0.35–0.45 carat\u003c\/li\u003e\n\u003cli\u003eBlue accent stones, likely synthetic sapphires\u003c\/li\u003e\n\u003cli\u003e18K White Gold\u003c\/li\u003e\n\u003cli\u003eStructured geometric design\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaker:\u003c\/strong\u003e Unknown\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal:\u003c\/strong\u003e 18K White Gold, stamped\/tested\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEra:\u003c\/strong\u003e Art Deco, circa 1920s–1930s\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter Stone:\u003c\/strong\u003e Old European Cut Diamond\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEstimated Size:\u003c\/strong\u003e Approximately 4.5 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEstimated Carat Weight:\u003c\/strong\u003e Approximately 0.35–0.45 carat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccent Stones:\u003c\/strong\u003e Blue stones, likely synthetic sapphires, period-consistent\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSetting:\u003c\/strong\u003e Square bezel with side-set accents\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Size:\u003c\/strong\u003e 6.5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 2.92 grams\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDetails\u003c\/h2\u003e\n\u003cp\u003eThis ring reflects a period where design was driven by proportion and control rather than excess. The composition is balanced—every element serves the structure.\u003c\/p\u003e\n\u003ch3\u003eThe Diamond\u003c\/h3\u003e\n\u003cp\u003eThe center stone is an Old European cut, hand-faceted with a higher crown and open culet. It produces a softer, more dispersed light than modern cuts, giving the stone depth rather than sharp brilliance.\u003c\/p\u003e\n\u003ch3\u003eThe Accent Stones\u003c\/h3\u003e\n\u003cp\u003eThe ring retains its original synthetic sapphire accents, a historically accurate choice that was widely embraced by jewelers during the Art Deco period. Learn why synthetic sapphires became one of the defining innovations of early twentieth-century jewelry in our guide to synthetic sapphires in antique and vintage jewelry.  Learn more about \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/synthetic-sapphires-antique-vintage-sapphire-rings\"\u003e\u003cstrong\u003esynthetic sapphires in antique and vintage jewelry\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eThe Setting\u003c\/h3\u003e\n\u003cp\u003eThe diamond is held within a square frame that anchors the design. This controlled geometry is a defining characteristic of the era.\u003c\/p\u003e\n\u003ch3\u003eThe Shoulders\u003c\/h3\u003e\n\u003cp\u003eEngraved detailing and milgrain edges extend along the band, adding texture while maintaining restraint.\u003c\/p\u003e\n\u003ch3\u003eThe Craftsmanship\u003c\/h3\u003e\n\u003cp\u003eThis is a hand-fabricated piece. The transitions between elements are deliberate, and the structure carries a density and balance not typically found in modern cast work. Read our guide on \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/how-to-identify-authentic-art-deco-jewelry\"\u003ehow to identify authentic Art Deco Jewelry\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eCondition\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eGood vintage condition.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLight surface wear consistent with age\u003c\/li\u003e\n\u003cli\u003eDiamond is secure within the setting\u003c\/li\u003e\n\u003cli\u003eAccent stones are intact and well-set\u003c\/li\u003e\n\u003cli\u003eShank shows thinning consistent with wear, while remaining structurally sound\u003c\/li\u003e\n\u003cli\u003eEngraving remains visible with moderate wear\u003c\/li\u003e\n\u003cli\u003eNo structural issues observed\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"The Tera Collection","offers":[{"title":"Default Title","offer_id":52067257549111,"sku":null,"price":1495.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/8889\/3239\/files\/Antique_18k_White_Gold_approx._0.50ct_Diamond_Target_Ring.png?v=1778767130"},{"product_id":"art-deco-shield-form-old-european-cut-diamond-ring","title":"Circa 1935 Shield Form Old European Cut Diamond Ring","description":"\u003cp\u003eA quietly powerful old cut diamond ring from the final years of the \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/how-to-identify-authentic-art-deco-jewelry\"\u003eArt Deco era\u003c\/a\u003e, framed within a sculptural shield-form bezel of engraved 14K white gold. Likely dating to approximately 1935, the ring reflects a restrained machine-age elegance in which proportion, structure, and material take precedence over excessive ornamentation.\u003c\/p\u003e\n\u003cp\u003eThe \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/old-european-cut-diamonds-explained\"\u003eOld European Cut diamond\u003c\/a\u003e displays lively light play and soft antique character, while the recessed setting gives the ring a grounded architectural presence that feels both deliberate and enduring. Hallmarked “585,” the piece may suggest possible European manufacture and carries the understated confidence often found in well-executed late Deco jewelry.\u003c\/p\u003e\n\u003cp\u003eNearly a century later, the ring remains remarkably contemporary. Its appeal lies not in size or ornament, but in the confidence of its proportions, the clarity of its geometry, and the enduring strength of its design. \u003c\/p\u003e\n\u003ch3\u003eAt A Glance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCirca 1935\u003c\/li\u003e\n\u003cli\u003eShield form Art Deco design\u003c\/li\u003e\n\u003cli\u003eOld European Cut diamond\u003c\/li\u003e\n\u003cli\u003eRecessed architectural bezel\u003c\/li\u003e\n\u003cli\u003eEngraved 14K white gold mounting\u003c\/li\u003e\n\u003cli\u003ePossible European manufacture\u003c\/li\u003e\n\u003cli\u003eLate Deco \/ Streamline Modern influence\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal:\u003c\/strong\u003e 14K White Gold\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHallmark:\u003c\/strong\u003e 585\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEra:\u003c\/strong\u003e Circa 1935\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Possibly European\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStone Cut:\u003c\/strong\u003e Old European \/ Transitional Old Cut Diamond\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEstimated Diamond Weight:\u003c\/strong\u003e Approximately 0.20 carat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisible Face-Up Diamond Diameter:\u003c\/strong\u003e Approx. 3.48mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSetting Type:\u003c\/strong\u003e Recessed shield form bezel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Hand-finished, engraved mounting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Weight:\u003c\/strong\u003e 3.48 grams\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Dimensions:\u003c\/strong\u003e 9.6mm x 9.6mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize: \u003c\/strong\u003e6.25\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDetails\u003c\/h3\u003e\n\u003ch4\u003e\u003cstrong\u003eThe Stone\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eAt its center, the Old European Cut diamond brings a softer, broader light return than a modern brilliant, complementing the ring's geometric architecture rather than competing with it.  The stone retains the slightly irregular personality associated with antique hand-cut diamonds, giving the ring warmth and individuality that modern precision-cut stones often lack.\u003c\/p\u003e\n\u003cp\u003eA visible inclusion is present near the center of the stone and is visible under close inspection and magnification. Rather than being concealed, this characteristic forms part of the diamond’s natural structure and antique authenticity.\u003c\/p\u003e\n\u003ch4\u003eThe Setting\u003c\/h4\u003e\n\u003cp\u003eThe diamond is framed within a recessed shield-form bezel that gives the ring much of its architectural presence. The setting creates a grounded, sculptural feel while securely holding the stone within the mounting.\u003c\/p\u003e\n\u003ch4\u003eThe Engraving\u003c\/h4\u003e\n\u003cp\u003eEngraved detailing remains visible throughout the mounting, adding texture and depth without interrupting the disciplined geometry of the design. The engraving contributes to the ring’s tactile quality while reinforcing its late Deco character.\u003c\/p\u003e\n\u003ch4\u003eThe Construction\u003c\/h4\u003e\n\u003cp\u003eThis piece reflects a more restrained side of Art Deco jewelry, where proportion and structure take precedence over excessive ornamentation. The compact shield form composition gives the ring a balanced and deliberate appearance that feels distinctly architectural.\u003c\/p\u003e\n\u003ch4\u003eThe Hallmark\u003c\/h4\u003e\n\u003cp\u003eA “585” hallmark is present on the ring, indicating 14K gold purity and possibly suggesting European manufacture. The hallmark serves as an important indicator of origin, material quality, and period authenticity.\u003c\/p\u003e\n\u003ch3\u003eCondition\u003c\/h3\u003e\n\u003cp\u003eVery good antique condition consistent with age and careful wear.\u003c\/p\u003e\n\u003cp\u003eThe mounting remains structurally sound, and the engraved detailing remains visible and tactile throughout the ring. Minor surface wear and age-appropriate signs of use are present under magnification, consistent with an authentic antique piece approaching a century in age.\u003c\/p\u003e\n\u003ch3\u003ePhotography Note\u003c\/h3\u003e\n\u003cp\u003ePhotographed under soft-spectrum lighting and high magnification to preserve accurate color, texture, and period detail. Enlarged images are intended to reveal the craftsmanship, antique character, and overall condition of the ring beyond what is typically visible at normal viewing distance.\u003c\/p\u003e","brand":"The Tera Collection","offers":[{"title":"Default Title","offer_id":52184908398903,"sku":null,"price":1100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/8889\/3239\/files\/circa_1935_art_deco_shield_form_old_European_cut_diamond_ring_front.jpg?v=1779481825"},{"product_id":"antique-art-deco-old-european-cut-diamond-ring-19k-gold","title":"Antique Art Deco Old European Cut Diamond Ring in 19K White Gold","description":"\u003cp\u003eA visually commanding transitional \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/how-to-identify-authentic-art-deco-jewelry\"\u003eEarly Art Deco\u003c\/a\u003e diamond ring crafted in uncommon 19K white gold and set with approximately 2.0–2.20 carats total weight of Old European Cut diamonds throughout. The ring possesses a remarkable presence on the hand, balancing strong architectural structure with finely layered antique detail in a way that feels both sculptural and deeply refined.\u003c\/p\u003e\n\u003cp\u003eThe composition centers an approximately 1.10–1.20 carat \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/old-european-cut-diamonds-explained\"\u003eOld European Cut diamond\u003c\/a\u003e framed by two substantial side stones and surrounded by additional bead-set accent diamonds within an elongated illusion-head arrangement. Openwork detailing, hand engraving, and milgrain accents create depth and dimensionality throughout the mounting, allowing the ring to catch light from nearly every angle while maintaining a grounded and deliberate visual weight. \u003c\/p\u003e\n\u003cp\u003eAn unusual “19K” hallmark adds further distinction to the piece and contributes to its refined material presence. Rather than relying on excess ornamentation, the ring succeeds through proportion, structure, brilliance, and carefully layered craftsmanship. \u003c\/p\u003e\n\u003ch3\u003eAt A Glance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTransitional Early Art Deco diamond ring\u003c\/li\u003e\n\u003cli\u003eOld European Cut diamonds throughout\u003c\/li\u003e\n\u003cli\u003eApproximate 2.00–2.20 carats total weight\u003c\/li\u003e\n\u003cli\u003e19K white gold mounting\u003c\/li\u003e\n\u003cli\u003eIllusion-head construction\u003c\/li\u003e\n\u003cli\u003eOpenwork and engraved details\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal:\u003c\/strong\u003e 19K White Gold\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHallmark: \u003c\/strong\u003e19K\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEra:\u003c\/strong\u003e Late 1920s to Early 1930s\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStone Cuts:\u003c\/strong\u003e Old European Cut diamonds throughout\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEstimated Total Diamond Weight:\u003c\/strong\u003e Approximately 2.00-2.20 carats total weight\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEstimated Center Diamond Weight:\u003c\/strong\u003e Approximately 1.10–1.20 carats\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter Diamond Diameter:\u003c\/strong\u003e Approx. 6.51mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSide Diamond Diameter:\u003c\/strong\u003e Approx. 4.35mm each, approximately .30 to .40ct each\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccent Diamond Diameter:\u003c\/strong\u003e Approx. 1.89mm each\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSetting Type:\u003c\/strong\u003e Illusion-head construction with bead-set diamonds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Hand-finished engraved mounting with openwork gallery\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Weight:\u003c\/strong\u003e 3.56 grams\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 5.75\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDetails\u003c\/h3\u003e\n\u003ch4\u003eThe Stones\u003c\/h4\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe ring is set entirely with Old European Cut diamonds displaying the broader flashes, higher crowns, visible culets, and softer light return associated with antique hand-cut stones. The larger center stone is framed by two substantial side diamonds and additional bead-set accent diamonds, creating a lively and visually cohesive antique diamond composition throughout the mounting.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe diamonds display a bright white appearance with exceptional brilliance and visual presence when worn. The main diamonds contain visible antique character and inclusions consistent with hand-cut diamonds of the period. Several diamonds show minor edge abrasions and small chips visible under magnification, consistent with age and long-term wear, though none materially detracts from the ring’s overall beauty, brilliance, or impressive presence on the hand.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003eThe Setting\u003c\/h4\u003e\n\u003cp\u003eThe elongated illusion-head construction gives the ring much of its architectural presence, visually expanding the composition while creating depth and layered dimensionality throughout the mounting. Openwork beneath the stones allows light movement through the gallery while maintaining a grounded sculptural appearance.\u003c\/p\u003e\n\u003ch4\u003eThe Engraving\u003c\/h4\u003e\n\u003cp\u003eHand engraving remains visible throughout the shoulders and gallery, adding texture and refinement without interrupting the disciplined geometry of the overall composition. Milgrain detailing softens the transitions between stone and metal while reinforcing the ring’s transitional Deco character.\u003c\/p\u003e\n\u003ch4\u003eThe Construction\u003c\/h4\u003e\n\u003cp\u003eThis piece reflects the transitional period between late antique craftsmanship and emerging Art Deco structure, balancing refined hand-finished detail with increasingly geometric composition. The result is a ring with exceptional finger presence that remains elegant, architectural, and highly wearable.\u003c\/p\u003e\n\u003ch4\u003eThe Hallmark\u003c\/h4\u003e\n\u003cp\u003eAn unusual “19K” hallmark is present on the ring, indicating a higher-than-standard gold purity more commonly associated with select European and Portuguese jewelry. The hallmark contributes to the ring’s distinctive character and serves as an important indicator of material quality and possible origin.\u003c\/p\u003e\n\u003ch3\u003eCondition\u003c\/h3\u003e\n\u003cp\u003eGood to Very Good antique condition consistent with age and careful wear.\u003c\/p\u003e\n\u003cp\u003eThe mounting remains structurally sound, with engraving and openwork details remaining visible throughout the ring. Minor surface wear and age-appropriate signs of use are present under magnification, consistent with an authentic antique piece approaching a century in age.\u003c\/p\u003e\n\u003cp\u003eThe diamonds remain lively and visually impressive when worn, with no condition issues materially detracting from the ring’s overall brilliance, structure, or visual presence.\u003c\/p\u003e\n\u003ch3\u003ePhotography Note\u003c\/h3\u003e\n\u003cp\u003ePhotographed under soft-spectrum lighting and high magnification to preserve accurate color, texture, and period detail. Enlarged images are intended to reveal craftsmanship, antique character, and overall condition beyond what is typically visible at normal viewing distance.\u003c\/p\u003e","brand":"The Tera Collection","offers":[{"title":"Default Title","offer_id":52188688515383,"sku":null,"price":4695.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/8889\/3239\/files\/White_Gold_Ring_Featuring_15_Diamonds.jpg?v=1779830202"},{"product_id":"art-deco-old-european-cut-diamond-ring-18k-white-gold","title":"Art Deco Old European Cut Diamond Ring in 18K White Gold","description":"\u003cp\u003eDelicate, graceful, and undeniably romantic, this authentic \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/how-to-identify-authentic-art-deco-jewelry\"\u003eArt Deco engagement ring\u003c\/a\u003e captures the refinement that made the era one of the most celebrated periods in jewelry design. Crafted in solid 18K white gold, the ring is defined by its airy filigree, elegant proportions, and architectural openwork that allows light to move effortlessly through the mounting.\u003c\/p\u003e\n\u003cp\u003eViewed from any angle, the ring reveals a careful balance between structure and delicacy. The elevated gallery, flowing filigree, and hand-finished details create a sense of depth and craftsmanship that modern mountings rarely achieve. Nearly a century after its creation, the piece remains remarkably wearable while preserving the character and artistry of the period.\u003c\/p\u003e\n\u003ch3\u003eAt A Glance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAuthentic Art Deco period ring\u003c\/li\u003e\n\u003cli\u003eElegant openwork filigree design\u003c\/li\u003e\n\u003cli\u003eSolid 18K white gold\u003c\/li\u003e\n\u003cli\u003eArchitectural elevated gallery\u003c\/li\u003e\n\u003cli\u003eHand-finished period craftsmanship\u003c\/li\u003e\n\u003cli\u003eClassic antique engagement ring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eMetal:\u003c\/strong\u003e 18K White Gold\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHallmark:\u003c\/strong\u003e Maker's mark and 18K hallmark present\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEra:\u003c\/strong\u003e Art Deco, circa 1920s–1930s\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCenter Stone:\u003c\/strong\u003e Natural Old European Cut Diamond\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEstimated Diamond Weight:\u003c\/strong\u003e Approximately 0.53 carat\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDiamond Diameter:\u003c\/strong\u003e Approximately 5.1mm\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRing Weight:\u003c\/strong\u003e 2.2 grams\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRing Size:\u003c\/strong\u003e 7\u003c\/p\u003e\n\u003ch2\u003eThe Diamond\u003c\/h2\u003e\n\u003cp\u003eThe ring is centered with an \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/old-european-cut-diamonds-explained\"\u003eOld European Cut diamond\u003c\/a\u003e measuring approximately 5.1mm in diameter and weighing approximately 0.53 carat. The stone displays the broad flashes, visible culet, and distinctive facet pattern associated with antique hand-cut diamonds. Bright, lively, and notably clean in appearance, the diamond exhibits excellent light return and strong visual presence within the mounting.\u003c\/p\u003e\n\u003cp\u003eUnlike modern brilliant cuts designed for maximum scintillation, Old European Cut diamonds produce larger flashes of light and a softer, more romantic character. The diamond complements the ring's refined architecture while preserving the unique personality that collectors and enthusiasts appreciate in antique hand-cut stones.\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eThe Setting\u003c\/h3\u003e\n\u003cp\u003eThe mounting rises into an elegant openwork gallery that creates both lightness and visual depth. Fine filigree extends through the shoulders and beneath the stone, producing a mounting that feels architectural without appearing heavy.\u003c\/p\u003e\n\u003cp\u003eThe craftsmanship reflects the qualities often sought in authentic Art Deco jewelry: proportion, balance, detail, and a clear emphasis on both beauty and structure.\u003c\/p\u003e\n\u003ch3\u003eThe Hallmark\u003c\/h3\u003e\n\u003cp\u003eThe ring retains both possibley an unidentified maker's mark and an 18K hallmark, confirming its high gold purity and contributing to its authenticity as a period piece.\u003c\/p\u003e\n\u003ch3\u003eCondition\u003c\/h3\u003e\n\u003cp\u003eGood antique condition consistent with age and careful wear.\u003c\/p\u003e\n\u003cp\u003eThe mounting remains structurally sound, with filigree and gallery details remaining visible throughout. Minor surface wear is present under magnification and is consistent with an authentic antique ring approaching a century in age.\u003c\/p\u003e\n\u003ch3\u003ePhotography Note\u003c\/h3\u003e\n\u003cp\u003ePhotographed under soft-spectrum lighting and high magnification to preserve accurate color, texture, and period detail. Enlarged images are intended to reveal craftsmanship, antique character, and overall condition beyond what is typically visible at normal viewing distance.\u003c\/p\u003e","brand":"The TERA Collection","offers":[{"title":"Default Title","offer_id":52428088115511,"sku":null,"price":1895.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/8889\/3239\/files\/Art_Deco_Old_European_Cut_Diamond_Ring_in_18K_White_Gold.png?v=1781094616"},{"product_id":"antique-old-european-cut-diamond-ring-platinum","title":"Antique Old European Cut Diamond Ring in Platinum | 17 Diamonds | Circa 1918–1925","description":"\u003cp\u003eIntricate and unmistakably handcrafted, this graceful antique diamond ring captures the elegance of the transition from the Edwardian era into the early \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/how-to-identify-authentic-art-deco-jewelry\" rel=\"noopener\" target=\"_blank\"\u003eArt Deco\u003c\/a\u003e period. Crafted in platinum, the ring is centered by a lively \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/old-european-cut-diamonds-explained\"\u003eOld European Cut diamond\u003c\/a\u003e surrounded by sixteen accent diamonds that flow through an airy openwork navette-inspired design. Every curve, bead, and engraved detail reflects the remarkable handcraftsmanship that defined fine jewelry in the early twentieth century.\u003c\/p\u003e\n\u003cp\u003eRather than relying on bold size alone, the ring creates its presence through balance, light, and detail. The pierced gallery allows light to reach the center diamond from below, while the surrounding diamonds and delicate milgrain soften the design into an elegant composition that remains just as beautiful today as when it was first created.\u003c\/p\u003e\n\u003cp\u003eMore than a century later, this ring stands as a beautiful example of authentic antique craftsmanship—a one-of-a-kind piece created by hand during an era when jewelry was built with remarkable attention to detail and artistry rarely duplicated today. \u003c\/p\u003e\n\u003ch3\u003eAt A Glance \u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAuthentic Antique Diamond Ring\u003c\/li\u003e\n\u003cli\u003eNatural Old European Cut Center Diamond\u003c\/li\u003e\n\u003cli\u003eSixteen Natural Accent Diamonds\u003c\/li\u003e\n\u003cli\u003eSolid Platinum\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHand-Applied Milgrain \u0026amp; Pierced Gallery\u003c\/li\u003e\n\u003cli\u003eCirca 1918–1925\u003c\/li\u003e\n\u003cli\u003eSize 7.5\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal:\u003c\/strong\u003e Solid Platinum (10% Iridium Alloy)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHallmarks:\u003c\/strong\u003e \"10% IR...\" (partially legible)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEra:\u003c\/strong\u003e Late Edwardian to Early Art Deco, Circa 1918–1925\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter Stone:\u003c\/strong\u003e Natural Old European Cut Diamond\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter Stone Diameter:\u003c\/strong\u003e Approximately 5.0 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEstimated Center Weight:\u003c\/strong\u003e Approximately 0.50 carat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccent Diamonds:\u003c\/strong\u003e Twelve approximately 1.5 mm and four approximately 1.0 mm natural diamonds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Stones:\u003c\/strong\u003e Seventeen Diamonds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Weight:\u003c\/strong\u003e 3.87 grams\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Size:\u003c\/strong\u003e 7.5\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Diamonds\u003c\/h3\u003e\n\u003cp\u003eThe ring is centered by a natural Old European Cut diamond measuring approximately 5.0 mm in diameter and estimated to weigh approximately 0.50 carat. The diamond displays the broad flashes of light and distinctive faceting that have made Old European Cuts enduringly admired for more than a century.\u003c\/p\u003e\n\u003cp\u003eSurrounding the center stone are sixteen natural accent diamonds individually set throughout the openwork mounting. Together they create a balanced presentation that enhances the center diamond while adding sparkle from nearly every angle without overwhelming the graceful design.\u003c\/p\u003e\n\u003cp\u003eUnder magnification, the center diamond displays natural internal characteristics consistent with an antique diamond. These inclusions are typical of genuine period stones and contribute to its individuality while remaining unobtrusive during normal viewing.\u003c\/p\u003e\n\u003ch3\u003eThe Design\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/platinum-vs-white-gold-antique-jewelry\" rel=\"noopener\" target=\"_blank\"\u003eCrafted in platinum\u003c\/a\u003e, the ring beautifully reflects the transition between the graceful elegance of the late Edwardian era and the emerging geometry of early Art Deco design. The elongated navette-inspired form creates exceptional finger coverage while maintaining a refined profile that remains comfortable for everyday wear.\u003c\/p\u003e\n\u003cp\u003eThe delicate openwork, hand-applied milgrain, pierced gallery, and carefully engraved shoulders demonstrate the remarkable level of craftsmanship achieved by jewelers of the period. Each of the seventeen diamonds is individually positioned within the flowing design, creating a ring that feels harmonious rather than symmetrical, with every element contributing to its overall character.\u003c\/p\u003e\n\u003cp\u003eAlthough modest in weight, the ring possesses an impressive visual presence through its intricate architecture and beautifully proportioned design.\u003c\/p\u003e\n\u003ch3\u003eThe Hallmarks\u003c\/h3\u003e\n\u003cp\u003eThe ring bears a partially legible hallmark reading \u003cstrong\u003e\"10% IR...\"\u003c\/strong\u003e. While the remaining characters have become worn with age, the visible portion is consistent with the \u003cstrong\u003e\"\u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/platinum-vs-white-gold-antique-jewelry\" target=\"_blank\" rel=\"noopener\"\u003e10% IRID. PLAT.\u003c\/a\u003e\"\u003c\/strong\u003e hallmark commonly found on early twentieth-century platinum jewelry.\u003c\/p\u003e\n\u003cp\u003ePlatinum alloyed with approximately 10% iridium was widely used during the Edwardian and early Art Deco periods for its strength and durability, making it particularly well-suited to the delicate pierced galleries, fine engraving, and intricate settings characteristic of the era. The visible hallmark is consistent with both the ring's construction and its estimated age.\u003c\/p\u003e\n\u003ch3\u003eCondition\u003c\/h3\u003e\n\u003cp\u003eVery good antique condition consistent with age and careful preservation.\u003c\/p\u003e\n\u003cp\u003eThe openwork remains crisp, the engraving and milgrain retain excellent definition, and all diamonds appear secure in their settings. Normal signs of wear are present, consistent with a ring that has been carefully worn and enjoyed for more than a century.\u003c\/p\u003e\n\u003ch3\u003ePhotography Note\u003c\/h3\u003e\n\u003cp\u003ePhotographed under soft-spectrum lighting and high magnification to accurately capture the diamonds, hand craftsmanship, and architectural details of the setting. Enlarged images are intended to reveal gemstone characteristics, surface condition, craftsmanship, and construction details beyond what is typically visible during normal viewing.\u003c\/p\u003e","brand":"The TERA Collection","offers":[{"title":"Default Title","offer_id":52534166683959,"sku":null,"price":2295.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/8889\/3239\/files\/Old_European_Cut_Diamond_Ring_in_Platinum.jpg?v=1782553993"},{"product_id":"antique-old-european-cut-diamond-ring-edwardian-five-stone","title":"Antique Five-Stone Old European Cut Diamond Ring | Late Edwardian to Early Art Deco | Circa 1915–1","description":"\u003cp\u003eTimeless in both design and craftsmanship, this late Edwardian to early Art Deco five-stone diamond ring captures the enduring appeal of antique jewelry from the early twentieth century. Crafted in solid gold, the ring is centered by a lively Old European Cut diamond accented by four additional old-cut natural diamonds, while an intricately pierced gallery showcases the careful hand craftsmanship beneath the setting. \u003c\/p\u003e\n\u003cp\u003eRather than relying on a single large diamond, the ring draws its beauty from balance, proportion, and the distinctive character of hand-cut stones. The Old European Cut center diamond displays the broad, romantic flashes of light that have made antique diamonds so highly sought after, while the surrounding old-cut diamonds complete the classic five-stone arrangement with the soft brilliance unique to antique diamond cutting.\u003c\/p\u003e\n\u003cp\u003eMore than a beautiful antique ring, this piece reflects a pivotal moment in jewelry design as the flowing elegance of the Edwardian era gradually evolved into the clean symmetry of early Art Deco. Its authentic period craftsmanship, timeless silhouette, and wearable design make it an excellent choice as an engagement ring, anniversary gift, or a meaningful addition to an antique jewelry collection.\u003c\/p\u003e\n\u003ch3\u003eAt A Glance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAuthentic Antique Five-Stone Diamond Ring\u003c\/li\u003e\n\u003cli\u003eCenter Old European Cut Natural Diamond\u003c\/li\u003e\n\u003cli\u003eFour Old-Cut Natural Diamonds\u003c\/li\u003e\n\u003cli\u003eApprox. 0.65–0.70 Carat Total Weight \u003c\/li\u003e\n\u003cli\u003eSolid Gold\u003c\/li\u003e\n\u003cli\u003eHand-Pierced Openwork Gallery\u003c\/li\u003e\n\u003cli\u003eLate Edwardian to Early Art Deco\u003c\/li\u003e\n\u003cli\u003eCirca 1915–1922\u003c\/li\u003e\n\u003cli\u003eSize 5.75\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eMetal:\u003c\/strong\u003e Solid Gold (Hallmarked 14K, acid tested approximately 16K)\u003cbr\u003e\u003cstrong\u003eHallmarks:\u003c\/strong\u003e 14K\u003cbr\u003e\u003cstrong\u003eEra:\u003c\/strong\u003e Late Edwardian to Early \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/how-to-identify-authentic-art-deco-jewelry\"\u003eArt Deco\u003c\/a\u003e, Circa 1915–1922\u003cbr\u003e\u003cstrong\u003eCenter Stone:\u003c\/strong\u003e \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/old-cut-diamonds-guide\"\u003eOld European Cut Natural Diamond\u003c\/a\u003e, approximately 3.80 mm\u003cbr\u003e\u003cstrong\u003eAccent Stones:\u003c\/strong\u003e Four \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/old-cut-diamonds-guide\"\u003eold-cut natural diamonds\u003c\/a\u003e measuring approximately 3.34 mm (2) and 3.08 mm (2)\u003cbr\u003e\u003cstrong\u003eTotal Carat Weight:\u003c\/strong\u003e Approximately 0.65–0.70 carat total weight\u003cbr\u003e\u003cstrong\u003eTotal Stone Count:\u003c\/strong\u003e Five Natural Diamonds\u003cbr\u003e\u003cstrong\u003eRing Weight:\u003c\/strong\u003e 1.92 grams\u003cbr\u003e\u003cstrong\u003eRing Size:\u003c\/strong\u003e 5.75\u003c\/p\u003e\n\u003ch3\u003eThe Diamonds\u003c\/h3\u003e\n\u003cp\u003eThe ring is centered by a natural Old European Cut diamond measuring approximately 3.80 mm, displaying the broad facets, open culet, and distinctive personality that define antique diamond cutting. Four additional old-cut natural diamonds measuring approximately 3.34 mm (2) and 3.08 mm (2) complete the traditional five-stone design, bringing the estimated total diamond weight to approximately 0.65–0.70 carat total weight.\u003c\/p\u003e\n\u003cp\u003eAs is common with antique jewelry, the diamonds display individual characteristics rather than modern matched calibration. The center Old European Cut is the brightest and most lively of the five stones. The two outer diamonds are well matched to one another, while the two inner diamonds exhibit a softer, slightly milky appearance. This symmetrical arrangement preserves the ring's balanced presentation while reflecting the individuality often found in genuine hand-cut antique diamonds.\u003c\/p\u003e\n\u003ch3\u003eThe Design\u003c\/h3\u003e\n\u003cp\u003eCrafted during the transition from the Edwardian era into early Art Deco, this ring combines the softer lines of the earlier period with the increasing emphasis on symmetry that would soon define Art Deco jewelry. The hand-pierced gallery provides both structural strength and visual interest, allowing light to pass beneath the diamonds while showcasing the skilled bench work that remains visible more than a century later.\u003c\/p\u003e\n\u003cp\u003eThe classic five-stone arrangement has remained one of the most enduring designs in fine jewelry. Its balanced proportions, comfortable profile, and authentic period craftsmanship make this ring equally suited for everyday wear or as a treasured addition to an antique jewelry collection.\u003c\/p\u003e\n\u003ch3\u003eCondition\u003c\/h3\u003e\n\u003cp\u003eVery good antique condition consistent with age and careful preservation.\u003c\/p\u003e\n\u003cp\u003eThe diamonds appear secure in their settings, and the ring retains its attractive period details. The ring shows evidence of a historic shank replacement, a common restoration that helps ensure continued wearability while preserving the original antique head and gallery. A fine surface line is visible on one shoulder where the head joins the shank. Based on inspection, it does not appear to extend through the metal or exhibit movement, and it is believed to be stable. As a precaution, the ring is scheduled for professional evaluation and repair prior to shipment to ensure long-term structural integrity. Light surface wear is present throughout, consistent with a ring that has been carefully worn and enjoyed for more than a century.\u003c\/p\u003e\n\u003cp\u003eThis ring will undergo a professional inspection and any necessary structural repairs prior to shipment, at no additional cost to the buyer.\u003c\/p\u003e\n\u003ch3\u003ePhotography Note\u003c\/h3\u003e\n\u003cp\u003ePhotographed under soft-spectrum lighting and high magnification to accurately capture the diamonds, hand craftsmanship, and period details of the setting. Enlarged images are intended to reveal gemstone characteristics, surface condition, craftsmanship, and construction details beyond what is typically visible during normal viewing.\u003c\/p\u003e","brand":"The TERA Collection","offers":[{"title":"Default Title","offer_id":52597251506487,"sku":null,"price":985.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/8889\/3239\/files\/Late_Edwardian_Transition_Jewelry.jpg?v=1783040011"},{"product_id":"antique-art-deco-cko-old-european-cut-diamond-ring","title":"Antique Art Deco Cummins-Kremer CKO Old European Cut Diamond Solitaire | 18K White Gold","description":"\u003cp\u003eRefined and distinctly architectural, this authentic \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/how-to-identify-authentic-art-deco-jewelry\" target=\"_blank\" rel=\"noopener\"\u003eArt Deco\u003c\/a\u003e\u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/how-to-identify-authentic-art-deco-jewelry\"\u003e\u003c\/a\u003e Old European Cut diamond solitaire embodies the clean geometry and exceptional craftsmanship that defined the early years of the Art Deco era. Crafted in solid 18K white gold, the ring features a beautifully proportioned Old European Cut diamond set in a square four-prong mounting above finely hand-engraved shoulders that retain remarkable crispness more than a century after their creation.\u003c\/p\u003e\n\u003cp\u003eThe elegant pierced gallery and meticulously engraved orange blossom motifs reflect the artistry of early twentieth-century jewelers, who combined structural precision with delicate hand finishing. Rather than relying on elaborate ornamentation alone, the ring achieves its beauty through balanced proportions, thoughtful engineering, and refined decorative engraving. Its timeless design remains every bit as wearable today as when it was first crafted, making it equally appealing as an engagement ring or an addition to a fine antique jewelry collection.\u003c\/p\u003e\n\u003cp\u003eBearing the distinctive CKO maker's mark, attributed to Cummins-Kremer Co. of Los Angeles, California, this authentic Art Deco solitaire represents both exceptional American craftsmanship and the enduring beauty that defines the finest antique jewelry.\u003c\/p\u003e\n\u003ch3\u003eAt A Glance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAuthentic Antique Art Deco Diamond Solitaire Ring\u003c\/li\u003e\n\u003cli\u003eOld European Cut Natural Diamond\u003c\/li\u003e\n\u003cli\u003eAttributed to Cummins-Kremer Co. (CKO)\u003c\/li\u003e\n\u003cli\u003eSolid 18K White Gold\u003c\/li\u003e\n\u003cli\u003eHand Engraved Floral Motif\u003c\/li\u003e\n\u003cli\u003eCirca 1925–1930\u003c\/li\u003e\n\u003cli\u003eSize 6\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal:\u003c\/strong\u003e Solid 18K White Gold\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHallmarks:\u003c\/strong\u003e CKO, 18K\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaker:\u003c\/strong\u003e Attributed to Cummins-Kremer Co. (CKO), Los Angeles, California\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEra:\u003c\/strong\u003e Art Deco, Circa 1925–1935\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter Stone:\u003c\/strong\u003e Natural Old European Cut Diamond\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiamond Size:\u003c\/strong\u003e Approximately 5.2 mm, estimated approximately 0.50–.60 carat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccent Stones:\u003c\/strong\u003e None\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Weight:\u003c\/strong\u003e 2 grams\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Size:\u003c\/strong\u003e 6\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Diamond\u003c\/h3\u003e\n\u003cp\u003eThe ring is centered on a lively Old European Cut natural diamond that displays the characteristics collectors admire in antique hand-cut stones. Its high crown, small table, and open culet create the broad flashes of light and distinctive facet pattern that distinguish Old European Cuts from their modern counterparts.\u003c\/p\u003e\n\u003cp\u003eUnlike modern brilliant-cut diamonds that emphasize intense scintillation, Old European Cut diamonds produce larger, slower flashes of light with exceptional depth and personality. The diamond remains bright and lively while preserving the handcrafted charm that makes these historic cuts increasingly sought after by collectors and antique jewelry enthusiasts.\u003c\/p\u003e\n\u003ch3\u003eThe Design\u003c\/h3\u003e\n\u003cp\u003eCrafted in solid 18K white gold, the ring reflects the restrained elegance of the Art Deco period through clean architectural lines and meticulous hand engraving. The beautifully engraved orange blossom motifs along the shoulders remain remarkably crisp, demonstrating the quality of both the original craftsmanship and the ring's careful preservation.\u003c\/p\u003e\n\u003cp\u003eThe elevated square four-prong mounting is supported by an open pierced gallery that allows light to enter beneath the diamond while creating an airy, balanced profile. Every element of the design serves both beauty and function, resulting in a refined solitaire that showcases the exceptional workmanship characteristic of fine American jewelry of the era.\u003c\/p\u003e\n\u003ch3\u003eMaker\u003c\/h3\u003e\n\u003cp\u003eThe interior of the shank bears the \u003cstrong\u003eCKO 18K\u003c\/strong\u003e hallmark, attributed to \u003cstrong\u003eCummins-Kremer Co.\u003c\/strong\u003e, an American jewelry manufacturer based in Los Angeles, California. Period jewelry trade directories record the company's \u003cstrong\u003eCKO\u003c\/strong\u003e trademark, linking the mark to a documented early twentieth-century maker.\u003c\/p\u003e\n\u003cp\u003eJewelry retaining an identifiable maker's mark offers collectors an additional connection to its history, preserving not only the craftsmanship of the piece itself but also the legacy of the workshop that created it.\u003c\/p\u003e\n\u003ch3\u003eCondition\u003c\/h3\u003e\n\u003cp\u003eVery good antique condition consistent with age and careful preservation.\u003c\/p\u003e\n\u003cp\u003eThe hand engraving remains exceptionally crisp throughout the shoulders and gallery, while the mounting retains its original architectural form with only minor signs of normal wear expected in an authentic antique ring. The diamond is secure in its setting, and the ring presents beautifully for both everyday wear and special occasions.\u003c\/p\u003e\n\u003ch3\u003ePhotography Note\u003c\/h3\u003e\n\u003cp\u003ePhotographed under soft-spectrum lighting and high magnification to accurately capture the brilliance of the Old European Cut diamond, the crisp hand engraving, and the architectural details of the setting. Enlarged images are intended to reveal gemstone characteristics, surface condition, craftsmanship, and construction details beyond what is typically visible during normal viewing.\u003c\/p\u003e","brand":"The TERA Collection","offers":[{"title":"Default Title","offer_id":52640454869303,"sku":null,"price":2195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/8889\/3239\/files\/Hero.jpg?v=1783699600"},{"product_id":"edwardian-18ct-gold-platinum-5-stone-015ctw-diamond-ring","title":"Edwardian Five-Stone Diamond Ring","description":"\u003cp\u003eSimple and elegant, this late Edwardian five-stone diamond ring dates to approximately 1915–1925, with early \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/how-to-identify-authentic-art-deco-jewelry\"\u003eArt Deco influence\u003c\/a\u003e. Crafted with a solid 18K yellow gold shank and a platinum diamond-set head, the ring features five graduated natural Old European Cut diamonds arranged in a clean, symmetrical row. \u003c\/p\u003e\n\u003cp\u003eThe center diamond is flanked by four progressively smaller diamonds. Together, the five stones are estimated at approximately 0.15 carat total weight. Their higher crowns, small tables, softly rounded outlines, and broad antique faceting are consistent with Old European cutting, although the culets become difficult to see in the smallest stones.\u003c\/p\u003e\n\u003cp\u003eThe ring’s appeal lies in its balanced simplicity. Its graduated arrangement, low profile, and restrained geometry reflect the transition from Edwardian elegance toward the cleaner symmetry associated with early Art Deco jewelry. Petite and easy to wear, it works beautifully as an understated engagement ring, anniversary ring, stacking ring, or antique diamond band. \u003c\/p\u003e\n\u003ch3\u003eAt A Glance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAuthentic Antique Five-Stone Diamond Ring\u003c\/li\u003e\n\u003cli\u003eFive Graduated \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/old-european-cut-diamonds-explained\"\u003eNatural Old European Cut Diamonds\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eApproximately 0.15 Carat Total Weight\u003c\/li\u003e\n\u003cli\u003eSolid 18K Yellow Gold Shank\u003c\/li\u003e\n\u003cli\u003ePlatinum Diamond-Set Head\u003c\/li\u003e\n\u003cli\u003eLow-Profile Mixed-Metal Construction\u003c\/li\u003e\n\u003cli\u003eLate Edwardian with Early Art Deco Influence\u003c\/li\u003e\n\u003cli\u003eCirca 1915–1925\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eMetal:\u003c\/strong\u003e Solid 18K Yellow Gold Shank with Platinum Head\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHallmarks:\u003c\/strong\u003e Stamped “18” and “PLAT”\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMetal Testing:\u003c\/strong\u003e Platinum Head Confirmed Through Electronic Testing\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOrigin:\u003c\/strong\u003e Likely English\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEra:\u003c\/strong\u003e Late Edwardian with Early Art Deco Influence, Circa 1915–1925\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCenter Stone:\u003c\/strong\u003e Natural Old European Cut Diamond, Estimated at Approximately 1\/16 Carat\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInner Side Diamonds:\u003c\/strong\u003e Two Natural Old European Cut Diamonds, Estimated at Approximately 1\/32 Carat Each\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOuter Side Diamonds:\u003c\/strong\u003e Two Natural Old European Cut Diamonds, Estimated at Approximately 1\/64 Carat Each\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEstimated Total Diamond Weight:\u003c\/strong\u003e Approximately 0.15 Carat Total Weight\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDiamond Color:\u003c\/strong\u003e Gently Warm; No Formal Color Grade Assigned\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTotal Stone Count:\u003c\/strong\u003e Five Natural Diamonds\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRing Weight:\u003c\/strong\u003e 2.07 Grams\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRing Size:\u003c\/strong\u003e [Insert Ring Size]\u003c\/p\u003e\n\u003ch3\u003eThe Diamonds\u003c\/h3\u003e\n\u003cp\u003eThe ring is set with five graduated natural Old European Cut diamonds arranged in a balanced horizontal row. The center stone displays the clearest Old European Cut characteristics, including a higher crown, small table, broad facet pattern, softly rounded outline, and visible culet. The smaller diamonds show the same higher crowns, small tables, and antique facet style, although their culets are difficult to see because of their petite size.\u003c\/p\u003e\n\u003cp\u003eTogether, the five diamonds are estimated at approximately 0.15 carat total weight. They are appropriate to the scale and age of the ring and create a cohesive antique appearance. No formal laboratory color or clarity grades have been assigned.\u003c\/p\u003e\n\u003ch3\u003eThe Design\u003c\/h3\u003e\n\u003cp\u003eThe five diamonds graduate evenly from the center toward the outer edges in a nearly straight horizontal row. This restrained symmetry gives the ring a clean, balanced appearance without the sharply angular geometry associated with later Art Deco jewelry.\u003c\/p\u003e\n\u003cp\u003eThe platinum head provides a naturally white setting around the diamonds, while the solid 18K yellow gold shank adds warmth and contrast. Viewed from the side, the individually formed settings create a lightly raised open gallery beneath the stones. Its low profile is practical and comfortable for regular wear.\u003c\/p\u003e\n\u003cp\u003eThe design is simple and unembellished, relying on its graduated diamonds, mixed-metal construction, and authentic antique character for its appeal.\u003c\/p\u003e\n\u003ch3\u003eCondition\u003c\/h3\u003e\n\u003cp\u003eWell preserved for an antique ring dating to approximately 1915–1925, this piece remains in good antique condition. The 18K yellow gold shank retains an even profile, and the platinum head preserves its original graduated five-stone form.\u003c\/p\u003e\n\u003cp\u003eLight surface scratches, minor abrasions, and gentle signs of age may be visible under magnification, consistent with previous wear. The diamonds may display natural inclusions, slight irregularities, and variations in facet pattern characteristic of antique hand cutting. The interior “18” and “PLAT” hallmarks remain visible.\u003c\/p\u003e\n\u003ch3\u003ePhotography Note\u003c\/h3\u003e\n\u003cp\u003ePhotographed under soft-spectrum lighting and high magnification to document the antique diamonds, hallmarks, mixed-metal construction, surface condition, and period details. Enlarged images may reveal gemstone characteristics and signs of age more readily than they are visible during normal viewing.\u003c\/p\u003e","brand":"TERA","offers":[{"title":"Default Title","offer_id":52796478980407,"sku":null,"price":850.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/8889\/3239\/files\/Edwardian_5-Stone_Diamond_Ring_in_18ct_Gold_Platinum.jpg?v=1786030562"},{"product_id":"antique-art-deco-1-90ctw-diamond-navette-ring","title":"Antique Art Deco 1.90 ctw Diamond Navette Engagement Ring in 14K White Gold","description":"\u003ch2\u003eAntique Art Deco 1.90 ctw Diamond Navette Engagement Ring in 14K White Gold\u003c\/h2\u003e\n\u003cp\u003eGraceful, romantic, and undeniably sophisticated, this exceptional \u003cstrong\u003eantique diamond navette ring\u003c\/strong\u003e beautifully bridges the Belle Époque and Edwardian periods and the emerging Art Deco era. Dating to approximately \u003cstrong\u003e1915–1925\u003c\/strong\u003e, the ring is crafted in solid \u003cstrong\u003e14K white gold\u003c\/strong\u003e and showcases a magnificent antique marquise-cut center diamond framed by an extraordinary pair of \u003cstrong\u003ematched old pear-cut side diamonds\u003c\/strong\u003e—a remarkably rare combination seldom encountered in authentic vintage jewelry.\u003c\/p\u003e\n\u003cp\u003eTogether with forty-eight additional natural accent diamonds, the fifty-one stones total an estimated \u003cstrong\u003e1.90 carats total weight (ctw)\u003c\/strong\u003e, creating breathtaking brilliance across the elongated shield\/navette silhouette. Flowing curvilinear channels soften the bold geometric outline, while the finely pierced lace filigree gallery reflects master early 20th-century craftsmanship. The result is a unique Art Deco statement ring with remarkable presence, exceptional finger coverage, and timeless elegance that sits comfortable and low on the finger.\u003c\/p\u003e\n\u003cp\u003eWhether worn as a unique antique engagement ring, a high-end cocktail ring, or a heirloom piece for collectors, this authentic vintage ring captures one of the most celebrated transitional eras in fine jewelry history.\u003c\/p\u003e\n\u003ch3\u003eAt A Glance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStyle:\u003c\/strong\u003e Authentic Antique Diamond Navette \/ Shield Ring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Carat Weight:\u003c\/strong\u003e Approx. 1.90 ctw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStone Count:\u003c\/strong\u003e 51 Natural Diamonds (No synthetic or lab-grown stones)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter Diamond:\u003c\/strong\u003e Antique Marquise Cut (Navette Brilliant)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSide Diamonds:\u003c\/strong\u003e Rare Matched Pair of Old Mine \/ Pendeloque Pear Cuts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal:\u003c\/strong\u003e Solid 14K White Gold\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEra:\u003c\/strong\u003e Art Deco with Distinct Belle Époque \/ Edwardian Influence (Circa 1915–1925)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinger Coverage:\u003c\/strong\u003e 15.5 mm Head Length\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal:\u003c\/strong\u003e Solid 14K White Gold\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHallmarks:\u003c\/strong\u003e Stamped “14K”\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEra:\u003c\/strong\u003e Transitional Late Edwardian \/ Early Art Deco, Circa 1915–1925\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter Stone:\u003c\/strong\u003e Natural Antique Marquise-Cut Diamond (approx. 10.0 × 5.0 mm, ~0.85–0.90 ct)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSide Stones:\u003c\/strong\u003e Two Natural Old Pear-Cut Diamonds (approx. 4.7 × 3.55 mm each, ~0.40–0.45 ctw pair)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccent Stones:\u003c\/strong\u003e Forty-Eight (48) Natural Single\/Round Diamonds in Graduated Sizes (~0.55–0.60 ctw)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEstimated Total Diamond Weight:\u003c\/strong\u003e Approximately 1.90 Carats Total Weight (ctw)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiamond Quality:\u003c\/strong\u003e Face-up bright with soft vintage warmth characteristic of antique diamonds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Stone Count:\u003c\/strong\u003e 51 Natural Earth-Mined Diamonds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Gross Weight:\u003c\/strong\u003e 4.7 Grams\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Size:\u003c\/strong\u003e 7.75 (US Size 7¾ — Resizable by your local bench jeweler)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Length \/ Face Coverage:\u003c\/strong\u003e Approximately 15.5 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfile Height:\u003c\/strong\u003e Low-profile setting, sits approximately 3.0 mm off the finger\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Diamonds\u003c\/h3\u003e\n\u003cp\u003eAt its center sits an impressive antique marquise-cut diamond measuring approximately \u003cstrong\u003e10 × 5 mm\u003c\/strong\u003e, flanked by a remarkably matched pair of antique pear-cut diamonds. Their generous open culets, steep crowns, and broad facet reflections are period-correct to early 20th-century diamond cutting, providing distinct antique character and vintage warmth.\u003c\/p\u003e\n\u003cp\u003eForty-eight additional natural round accent diamonds line the outer frame and sweeping channels, forming a brilliant pave border that enhances the elongated navette silhouette. Combined, the 51 diamonds are estimated at \u003cstrong\u003e1.90 carats total weight\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eThe Design \u0026amp; Architecture\u003c\/h3\u003e\n\u003cp\u003eThis ring masterfully bridges two iconic eras. Its elongated navette silhouette and sweeping curved borders reflect the romance of the Edwardian and Belle Époque eras, while its symmetrical shield framing hints at early Art Deco architecture.\u003c\/p\u003e\n\u003cp\u003eThe finely hand-pierced under-gallery showcases open honeycomb craftsmanship, allowing maximum light to enter the diamonds while keeping the ring lightweight and breathable. Resting just \u003cstrong\u003e3 mm\u003c\/strong\u003e off the finger, this ring delivers high-impact knuckle-to-knuckle presence while maintaining a sleek, low profile that won't catch on clothing.\u003c\/p\u003e\n\u003ch3\u003eCondition Report\u003c\/h3\u003e\n\u003cp\u003eWonderfully preserved for a century-old piece dating to \u003cstrong\u003ec. 1915–1925\u003c\/strong\u003e, this ring is in very good antique condition. The 14K gold mounting retains crisp milgrain detail, secure settings, and beautiful original character.\u003c\/p\u003e\n\u003cp\u003eLight surface wear, minor micro-abrasions, and gentle signs of age are consistent with careful ownership over the past 100 years. Please review all macro photographs carefully as they serve as an integral part of this condition report.\u003c\/p\u003e\n\u003ch3 class=\"PDq2pG_selectionAnchorContainer\"\u003e\n\u003cspan role=\"text\"\u003ePhotography Note\u003c\/span\u003e\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp\u003ePhotographed under soft-spectrum lighting and high magnification to document the diamonds, craftsmanship, hallmarks, condition, and period details. Enlarged images may reveal gemstone characteristics and signs of age that are less noticeable during normal viewing.\u003c\/p\u003e","brand":"The TERA Collection","offers":[{"title":"Default Title","offer_id":52799850840375,"sku":null,"price":7900.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/8889\/3239\/files\/Art_Deco_Diamond_Navette_Engagement_Ring_-_Perspective_View.jpg?v=1786109986"},{"product_id":"art-deco-platinum-toi-et-moi-two-stone-diamond-ring","title":"Art Deco Platinum Toi et Moi Diamond Ring with Unusual Shamrock Motif","description":"\u003ch2\u003e\u003cbr\u003e\u003c\/h2\u003e\n\u003cp\u003eStriking, romantic, and wonderfully distinctive, this authentic \u003cstrong\u003eArt Deco platinum \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/what-is-a-toi-et-moi-ring-meaning-history\"\u003eToi et Moi diamond ring\u003c\/a\u003e\u003c\/strong\u003e, dating to approximately the 1920s, pairs two natural Old European Cut diamonds in one of the most enduring romantic designs in antique jewelry. Meaning \u003cstrong\u003e“you and me,”\u003c\/strong\u003e the Toi et Moi style places two diamonds side by side—a beautifully simple expression of two lives joined together.\u003c\/p\u003e\n\u003cp\u003eFrom above, the ring is pure Art Deco elegance. Two \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/old-european-cut-diamonds-explained\" target=\"_blank\" title=\"A guide to Old European Cut Diamonds\" rel=\"noopener\"\u003eOld European Cut diamonds\u003c\/a\u003e sit within crisp geometric surrounds edged in delicate milgrain, while beautifully hand-engraved shoulders draw the eye toward the center. The diamonds retain the broad flashes, visible culets, and individual character that make antique hand-cut stones so captivating.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBut the most remarkable detail is almost completely hidden.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTurn the ring to the side and the platinum gallery reveals \u003cstrong\u003esix individually pierced three-leaf shamrocks—three beneath each diamond\u003c\/strong\u003e. It is an extraordinary amount of craftsmanship devoted to a detail that its original wearer would rarely have seen, and exactly the kind of thoughtful construction that makes fine antique jewelry so compelling.\u003c\/p\u003e\n\u003cp\u003eThe contrast is wonderful: disciplined Art Deco geometry from above, intricate botanical workmanship beneath, and two old-cut diamonds at the center. More than a century after it was made, the ring remains an exceptionally charming and distinctive example of period craftsmanship—and a particularly beautiful interpretation of the romantic Toi et Moi design.\u003c\/p\u003e\n\u003ch2\u003eAt A Glance\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAuthentic 1920s Art Deco Diamond Ring\u003c\/li\u003e\n\u003cli\u003eRomantic Toi et Moi “You and Me” Design\u003c\/li\u003e\n\u003cli\u003eTwo Natural Old European Cut Diamonds\u003c\/li\u003e\n\u003cli\u003eApproximately 0.50 Carat Total Diamond Weight\u003c\/li\u003e\n\u003cli\u003eTested Platinum Period Construction\u003c\/li\u003e\n\u003cli\u003eExtraordinary Pierced Shamrock Gallery\u003c\/li\u003e\n\u003cli\u003eFine Milgrain \u0026amp; Hand-Engraved Detailing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal:\u003c\/strong\u003e Tested Platinum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEra:\u003c\/strong\u003e Art Deco, Circa 1920s\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStyle:\u003c\/strong\u003e Toi et Moi \/ Two-Stone Ring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiamonds:\u003c\/strong\u003e Two Natural Old European Cut Diamonds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiamond Measurements:\u003c\/strong\u003e Approximately 3.6 mm each\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEstimated Total Diamond Weight:\u003c\/strong\u003e Approximately 0.50 carat, calculated from mounted measurements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Face:\u003c\/strong\u003e Approximately 12.5 × 7 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight Off Finger:\u003c\/strong\u003e Approximately 6.65 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Weight:\u003c\/strong\u003e 4.2 grams\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Size:\u003c\/strong\u003e 6\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eThe Diamonds\u003c\/h2\u003e\n\u003cp\u003eThe ring is centered by two natural Old European Cut diamonds positioned side by side in the traditional Toi et Moi arrangement. Rather than one stone serving as the dominant center, the diamonds share the composition, giving the ring its characteristic balance and romantic symbolism.\u003c\/p\u003e\n\u003cp\u003eBoth diamonds display the personality associated with antique hand cutting. Their broader facet patterns and visible culets create flashes of light that feel distinctly different from the tighter, more uniform scintillation of a modern round brilliant.\u003c\/p\u003e\n\u003cp\u003eThe diamonds measure approximately 3.6 mm each and are estimated at approximately 0.50 carat combined based on mounted measurements. Surrounded by bright \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/platinum-vs-white-gold-antique-jewelry\" rel=\"noopener\" target=\"_blank\"\u003eplatinum and fine milgrain\u003c\/a\u003e, they present beautifully within the setting and form a strong focal point without overwhelming the design's delicacy.  They are evenly matched, with one being slightly warmer than the other.\u003c\/p\u003e\n\u003ch2\u003eThe Design\u003c\/h2\u003e\n\u003cp\u003eThe hidden workmanship is what makes this ring particularly special.\u003c\/p\u003e\n\u003cp\u003eViewed from above, the design is \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/how-to-identify-authentic-art-deco-jewelry\"\u003eunmistakably Art Deco\u003c\/a\u003e. Each diamond is framed by a geometric octagonal surround finished with delicate milgrain, creating the crisp symmetry and architectural character associated with 1920s jewelry. Hand engraving continues along the shoulders, softening the geometry as the design transitions into the shank.\u003c\/p\u003e\n\u003cp\u003eFrom the side, however, the ring reveals an entirely different personality.\u003c\/p\u003e\n\u003cp\u003eBeneath the diamonds are \u003cstrong\u003esix individually pierced three-leaf shamrocks, with three positioned beneath each stone\u003c\/strong\u003e. Rather than simply being engraved onto the platinum, the shamrocks are incorporated into the open gallery itself, turning part of the ring's supporting architecture into decoration.\u003c\/p\u003e\n\u003cp\u003eIt is an unusually thoughtful detail because much of this workmanship disappears when the ring is worn. The original jeweler nevertheless devoted considerable attention to an area intended to be discovered rather than immediately seen.\u003c\/p\u003e\n\u003cp\u003eWhether the shamrocks represented Irish heritage, good fortune, personal symbolism, or simply appealed to the original owner, we can't say. That mystery is part of the ring's charm. What remains is a wonderfully distinctive piece of period craftsmanship and a reminder that some of the finest details in antique jewelry are often hidden beneath the surface.\u003c\/p\u003e\n\u003cp\u003eThe unusually specific shamrock motif, combined with the extraordinary amount of workmanship devoted to a detail largely hidden when the ring is worn, suggests this may have been a bespoke or specially commissioned piece. Without surviving documentation, its original story cannot be known with certainty, but this does not feel like an incidental decorative detail. The six carefully incorporated shamrocks appear to have been an intentional and meaningful part of the design.\u003c\/p\u003e\n\u003ch2\u003eCondition\u003c\/h2\u003e\n\u003cp\u003eThis antique ring remains beautifully preserved, particularly considering the delicacy of its construction and more than a century of history.\u003c\/p\u003e\n\u003cp\u003eThe pierced shamrock gallery remains remarkably well defined, while the geometric diamond surrounds, fine milgrain, hand engraving, and decorative shoulders retain excellent visual detail.\u003c\/p\u003e\n\u003cp\u003eAs expected with authentic antique jewelry, close examination under magnification reveals subtle evidence of age, wear, and hand finishing. These characteristics are consistent with the history and individually crafted nature of the piece and do not detract from its overall presentation.\u003c\/p\u003e\n\u003ch2\u003ePhotography Note\u003c\/h2\u003e\n\u003cp\u003ePhotographed under soft-spectrum lighting and high magnification to accurately capture the Old European Cut diamonds, fine milgrain, hand engraving, pierced shamrock gallery, and period construction of the platinum setting.\u003c\/p\u003e\n\u003cp\u003eAntique old-cut diamonds are individually cut and often display considerably more brilliance and broad flashes of light in motion than a still photograph can fully capture. Enlarged images are intended to reveal gemstone characteristics, surface condition, craftsmanship, and construction details beyond what is typically visible during normal viewing.\u003c\/p\u003e","brand":"TERA","offers":[{"title":"Default Title","offer_id":52892823257399,"sku":null,"price":1750.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/8889\/3239\/files\/Hero_Art_Deco_1920s_Platinum_Toi_et_Moi_Two_Stone_Old_European_Diamond_Rin.jpg?v=1787596666"},{"product_id":"circa-1930-art-deco-platinum-diamond-sapphire-ring","title":"Circa 1930 Art Deco Platinum Old European Cut Diamond \u0026 Sapphire Ring","description":"\u003cp\u003eBoldly geometric yet beautifully refined, this authentic \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/how-to-identify-authentic-art-deco-jewelry\"\u003eArt Deco\u003c\/a\u003e platinum diamond and sapphire ring dates to approximately 1930 and captures the graphic sophistication that defined the period. Two lively old-cut diamonds anchor the composition, separated by a slender deep-blue sapphire and framed at either end by sharply pointed triangular sapphires. The contrast between bright diamonds, saturated blue sapphires, and cool platinum gives this compact ring remarkable presence on the hand.\u003c\/p\u003e\n\u003cp\u003eWhat makes the ring particularly compelling is how much design is concentrated into such a beautifully proportioned form. The alternating diamonds and sapphires create a strong geometric rhythm across the finger, while fine milgrain, engraved shoulders, and an intricate pierced gallery soften the architecture with the delicate craftsmanship expected of fine period platinum jewelry.\u003c\/p\u003e\n\u003cp\u003eThe diamonds are beautifully matched in color, brightness, and lively sparkle, while their hand-cut facet patterns retain the individuality that makes antique diamonds so appealing. Combined with the rich blue sapphires and beautifully detailed platinum setting, they create a ring that feels distinctly Art Deco from every angle—architectural and precise, yet delicate and remarkably wearable nearly a century after it was made.\u003c\/p\u003e\n\u003ch2\u003eAt A Glance\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAuthentic Circa 1930 Art Deco Ring\u003c\/li\u003e\n\u003cli\u003eSolid Platinum Period Construction\u003c\/li\u003e\n\u003cli\u003eTwo Well-Matched Natural \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/old-cut-diamonds-guide\" rel=\"noopener\" target=\"_blank\"\u003eOld-Cut Diamonds\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eRich Blue Geometric Sapphire Accents\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFine Milgrain and Engraved Detailing\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBeautifully Proportioned Geometric Design\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal:\u003c\/strong\u003e \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/platinum-vs-white-gold-antique-jewelry\"\u003eSolid Platinum\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHallmark:\u003c\/strong\u003e Stamped “PLAT”\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEra:\u003c\/strong\u003e Art Deco, Circa 1930\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiamond One:\u003c\/strong\u003e Natural Old European Cut Diamond measuring approximately 3.25 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiamond Two:\u003c\/strong\u003e Natural Old European \/ Transitional Cut Diamond measuring approximately 3.25 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEstimated Total Diamond Weight:\u003c\/strong\u003e Approximately 0.24–0.28 carat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiamond Appearance:\u003c\/strong\u003e Well matched in apparent color, brightness, size, and face-up performance; lively with a slightly warm appearance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter Sapphire:\u003c\/strong\u003e Blue step-cut sapphire measuring approximately 1.75 × 3.66 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSide Sapphires:\u003c\/strong\u003e Two triangular-cut blue sapphires, each measuring approximately 2.96 mm along the flat side × 1.8 mm from the flat side to the point\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSapphire Color:\u003c\/strong\u003e Dark blue\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Stone Count:\u003c\/strong\u003e Five — two natural diamonds and three blue sapphires\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Head:\u003c\/strong\u003e Approximately 12 mm long × 4.67 mm wide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight Above Finger:\u003c\/strong\u003e Approximately 4.5 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Weight:\u003c\/strong\u003e 2.81\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Size:\u003c\/strong\u003e 6.5\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eThe Diamonds\u003c\/h2\u003e\n\u003cp\u003eThe ring is set with two natural old-cut diamonds measuring approximately 3.25 mm each and estimated at approximately 0.24–0.28 carat combined. They are beautifully matched in apparent color, size, brightness, and face-up performance, with a touch of warmth and lively sparkle that contrasts particularly well against the darker blue sapphires.\u003c\/p\u003e\n\u003cp\u003eUnder high magnification, subtle differences in their hand-cut facet patterns become visible. One displays a pronounced open culet and the broad, flower-like pattern characteristic of an \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/old-european-cut-diamonds-explained\"\u003eOld European Cut diamond\u003c\/a\u003e, while the second has a considerably smaller culet and tighter central facet structure, suggesting a later Old European Cut approaching the \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/transitional-cut-diamonds-guide\"\u003eTransitional Cut\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eSuch variation is characteristic of antique hand-cut diamonds. Despite these subtle technical differences, the stones were clearly well matched visually and perform beautifully together in the ring.\u003c\/p\u003e\n\u003ch2\u003eThe Sapphires\u003c\/h2\u003e\n\u003cp\u003eThree dark blue sapphires provide the strong color contrast central to the design. A narrow step-cut sapphire separates the two diamonds, while pointed triangular-cut sapphires terminate the composition at either end.\u003c\/p\u003e\n\u003cp\u003eThe sapphires have a rich, darker blue appearance that creates dramatic contrast against the bright diamonds and cool platinum. Their geometric shapes are integral to the ring's architecture rather than simply decorative accent stones.\u003c\/p\u003e\n\u003cp\u003eThe sapphires have not been submitted to a gemological laboratory, and their natural versus synthetic origin is currently undetermined.\u003c\/p\u003e\n\u003ch2\u003eThe Design\u003c\/h2\u003e\n\u003cp\u003eThe architecture of this ring is quintessentially Art Deco.\u003c\/p\u003e\n\u003cp\u003eTwo geometric platinum diamond settings dominate the composition, divided at the center by a narrow rectangular sapphire. At either end, pointed triangular sapphires extend the design outward, creating a crisp progression of alternating white and blue stones across the finger.\u003c\/p\u003e\n\u003cp\u003eFine milgrain outlines the principal elements, while engraved detailing continues through the shoulders and creates a graceful transition into the platinum shank. The profile reveals another layer of craftsmanship: beneath the stones is an intricate pierced platinum gallery that gives the setting visual lightness while demonstrating the attention paid even to areas primarily seen from an angle.\u003c\/p\u003e\n\u003cp\u003eAt approximately 12 mm long by 4.67 mm wide, the head is compact but visually substantial. It rises approximately 4.5 mm above the finger, maintaining a relatively low and wearable profile while the alternating diamonds and dark sapphires provide excellent finger presence.\u003c\/p\u003e\n\u003cp\u003eThe combination of old-cut diamonds, geometric sapphire accents, fine milgrain, engraving, and pierced platinum construction creates a wonderfully complete expression of Art Deco design.\u003c\/p\u003e\n\u003ch2\u003eCondition\u003c\/h2\u003e\n\u003cp\u003eThe ring remains in very good antique condition with age-related wear consistent with a platinum ring dating to approximately 1930. The overall architecture remains well defined, and the diamonds, sapphires, pierced gallery, and engraved shoulder details present beautifully.\u003c\/p\u003e\n\u003cp\u003eUnder high magnification, some flattening is visible along portions of the platinum surrounding the diamonds, and areas of the original milgrain have softened or flattened with wear. These characteristics are considerably less apparent during normal viewing than in the enlarged photographs and do not detract from the overall presentation of the ring.\u003c\/p\u003e\n\u003cp\u003eThe ring retains the subtle surface character expected of authentic period jewelry rather than having been aggressively restored or refinished.\u003c\/p\u003e\n\u003ch2\u003ePhotography Note\u003c\/h2\u003e\n\u003cp\u003ePhotographed under soft-spectrum lighting and high magnification to accurately capture the old-cut diamonds, blue sapphires, milgrain, engraving, pierced gallery, surface condition, and period construction of the platinum setting.\u003c\/p\u003e\n\u003cp\u003eAntique hand-cut diamonds are individually fashioned and often display considerably more brilliance and broad flashes of light in motion than a still photograph can fully capture. Enlarged images are intended to reveal gemstone characteristics, surface condition, craftsmanship, and construction details beyond what is typically visible during normal viewing.\u003c\/p\u003e","brand":"TERA","offers":[{"title":"Default Title","offer_id":52910803124535,"sku":null,"price":1100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/8889\/3239\/files\/art-deco-platinum-old-european-cut-diamond-and-sapphire-ring-angled-hero-view.jpg?v=1787904425"},{"product_id":"art-deco-oec-diamond-floral-buttercup-ring","title":"Late Art Deco 14K Gold Old European Cut Diamond Floral Ring, Circa 1935–1940","description":"\u003cp\u003eSome rings reveal themselves from the top. This one asks to be turned in your hand.\u003c\/p\u003e\n\u003cp\u003eAt its center, a bright and lively \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/old-european-cut-diamonds-explained\"\u003eOld European Cut diamond\u003c\/a\u003e emerges from a sculpted golden flower. Turn the ring slightly and layers of textured petals and pierced scrollwork appear beneath it. Follow those curves into the shoulders and they transition into crisp geometric details traveling down the shank. Turn the ring completely around, and the decoration remains.\u003c\/p\u003e\n\u003cp\u003eRemarkably little about this ring is left untouched.\u003c\/p\u003e\n\u003cp\u003eMost diamond rings concentrate their ornament around the center stone before gradually resolving into a simple band. This ring never does. Floral, sculptural, pierced, engraved, and geometric elements flow continuously from one surface to the next, giving the piece an almost one-of-a-kind character and revealing something new from virtually every angle.\u003c\/p\u003e\n\u003cp\u003eAt the center of it all is an approximately 0.45 carat Old European Cut diamond that is beautiful in its own right—bright, lively, and faces up beautifully white. But this is far more than a diamond solitaire. It is a remarkably complete piece of Late \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/how-to-identify-authentic-art-deco-jewelry\" rel=\"noopener\" target=\"_blank\"\u003eArt Deco\u003c\/a\u003e jewelry architecture, where the craftsmanship and imagination of the setting are every bit as compelling as the stone it was created to hold.\u003c\/p\u003e\n\u003ch2\u003eAt a Glance\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eExceptional Late Art Deco floral design, circa 1935–1940\u003c\/li\u003e\n\u003cli\u003eBright and lively approximately 0.45 ct Old European Cut natural diamond\u003c\/li\u003e\n\u003cli\u003eSculpted, textured, and pierced multi-level floral head\u003c\/li\u003e\n\u003cli\u003eIntricate scrolling shoulders with exceptional dimensional detail\u003c\/li\u003e\n\u003cli\u003eEngraved chevron decoration continuing around the shank\u003c\/li\u003e\n\u003cli\u003e14K yellow gold with contrasting white-metal accents\u003c\/li\u003e\n\u003cli\u003eRing size 5.75\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eEra:\u003c\/strong\u003e Late Art Deco, circa 1935–1940\u003cbr\u003e\u003cstrong\u003eMetal:\u003c\/strong\u003e 14K Yellow Gold with white-metal accents\u003cbr\u003e\u003cstrong\u003eHallmark:\u003c\/strong\u003e 14K\u003cbr\u003e\u003cstrong\u003eRing Size:\u003c\/strong\u003e 5.75\u003cbr\u003e\u003cstrong\u003eTotal Weight:\u003c\/strong\u003e 1.56 grams\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCenter Stone:\u003c\/strong\u003e Natural Diamond\u003cbr\u003e\u003cstrong\u003eDiamond Cut:\u003c\/strong\u003e Old European Cut\u003cbr\u003e\u003cstrong\u003eDiamond Diameter:\u003c\/strong\u003e Approximately 4.67 mm\u003cbr\u003e\u003cstrong\u003eEstimated Diamond Weight:\u003c\/strong\u003e Approximately 0.45 carat, estimated while mounted\u003cbr\u003e\u003cstrong\u003eColor:\u003c\/strong\u003e Faces up relatively colorless\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFloral Head:\u003c\/strong\u003e Approximately 8 mm \u003cbr\u003e\u003cstrong\u003eMaximum Face Width:\u003c\/strong\u003e From point to point approximately 9.35 mm\u003cbr\u003e\u003cstrong\u003eHeight Above Finger:\u003c\/strong\u003e Approximately 6.56 mm\u003c\/p\u003e\n\u003ch2\u003eThe Stone\u003c\/h2\u003e\n\u003cp\u003eAt the heart of the ring is a particularly attractive \u003cstrong\u003eOld European Cut natural diamond\u003c\/strong\u003e, measuring approximately 4.67 mm and estimated at approximately 0.45 carat while mounted.\u003c\/p\u003e\n\u003cp\u003eThe diamond is bright and lively, with strong flashes of light moving across its broad old-cut facets. It faces up relatively colorless, creating a crisp contrast against the warmth of the surrounding yellow gold.\u003c\/p\u003e\n\u003cp\u003eRather than displaying the highly regimented optical pattern of a modern round brilliant, the diamond retains the individual character that makes old cuts so appealing. It is a very good stone in its own right and more than capable of holding the eye amid the extraordinary amount of craftsmanship surrounding it.\u003c\/p\u003e\n\u003ch2\u003eThe Setting\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eThere is not an ordinary angle on this ring.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFrom above, the diamond appears to emerge from a deeply dimensional golden flower. Individual textured petals radiate outward beneath the stone, while small pierced openings create pockets of light and shadow between the layers. Contrasting white-metal accents immediately surrounding the diamond visually lift the stone away from the yellow gold and place it firmly at the center of the composition.\u003c\/p\u003e\n\u003cp\u003eThe profile reveals even more. Beneath the flower is an intricate framework of curling scrolls and open spaces that gives the setting an architectural quality. Rather than appearing as a decorative head simply attached to a band, the flower flows directly into equally elaborate shoulders.\u003c\/p\u003e\n\u003cp\u003eAnd the jeweler still wasn't finished.\u003c\/p\u003e\n\u003cp\u003eAs the scrolling shoulders travel toward the shank, the design transitions from organic curves into crisp geometric decoration. A repeating chevron pattern continues down the band and, unusually, carries through the back of the shank rather than disappearing into plain gold.\u003c\/p\u003e\n\u003cp\u003eThat continuity is what makes the ring so remarkable. \u003cstrong\u003eIt was designed in the round.\u003c\/strong\u003e The flower, gallery, shoulders, profile, and shank are not isolated decorative elements; each leads naturally into the next.\u003c\/p\u003e\n\u003cp\u003eFor a ring weighing only 1.56 grams, the amount of detail is extraordinary. Its presence comes not from heavy gold or an oversized diamond, but from exceptionally thoughtful design executed across virtually every visible surface.\u003c\/p\u003e\n\u003ch2\u003eThe Styling \u0026amp; Wear\u003c\/h2\u003e\n\u003cp\u003eOriginally created as a diamond ring, this piece feels remarkably relevant nearly a century later. Its approximately 0.45 carat Old European Cut diamond provides enough presence to stand confidently at the center, while the elaborate floral architecture makes the ring appear considerably more substantial than its carat weight alone would suggest.\u003c\/p\u003e\n\u003cp\u003eDespite its intricate appearance, \u003cstrong\u003ethis is a ring that can be enjoyed as an everyday piece\u003c\/strong\u003e. The diamond is securely held within the surrounding floral architecture, while the sculpted shoulders create a substantial transition from the setting into the shank. As with any vintage fine jewelry, reasonable care is recommended during activities that could subject the ring to hard knocks or abrasion.\u003c\/p\u003e\n\u003cp\u003eFor someone searching for a\u003cstrong\u003e vintage engagement ring\u003c\/strong\u003e, it offers something a conventional solitaire simply cannot: an old diamond surrounded by a setting with a personality entirely its own. It would be equally compelling as a \u003cstrong\u003eright-hand signature ring\u003c\/strong\u003e or meaningful \u003cstrong\u003eanniversary ring\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eAt approximately 6.56 mm above the finger, the setting has enough elevation to showcase the sculpted flower, openwork, and profile of the Old European Cut diamond without feeling excessively tall on the hand.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThis is a ring meant to be worn, not simply admired—and one whose details continue to reveal themselves the longer you live with it.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eA Word on Resizing\u003c\/h2\u003e\n\u003cp\u003eThis ring is currently a size 5.75. Because the engraved chevron design continues across the back of the shank, resizing requires more consideration than it would with a plain band.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSizable by an experienced bench jeweler; laser sizing is recommended to preserve the detailed shoulders and engraved shank.\u003c\/strong\u003e An adjustment of about one to one-and-a-half sizes is generally the most straightforward. A larger adjustment approaching two sizes may be possible, but could require either losing a portion of the rear chevron pattern or having an experienced bench jeweler recreate the affected engraving after sizing.\u003c\/p\u003e\n\u003ch2\u003eNote on Photography\u003c\/h2\u003e\n\u003cp\u003eOur jewelry is photographed at high magnification to show craftsmanship, condition, and detail as clearly as possible. This can make normal signs of age and wear appear more prominent than they are to the unaided eye. Please refer to the measurements provided for an accurate sense of scale.\u003c\/p\u003e","brand":"TERA","offers":[{"title":"Default Title","offer_id":52934568837431,"sku":null,"price":1800.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/8889\/3239\/files\/vintage-old-european-cut-diamond-buttercup-solitaire-ring-14k-gold-hero.jpg?v=1788256222"},{"product_id":"art-deco-aquamarine-diamond-mosaic-ring","title":"1920s Art Deco Aquamarine \u0026 Old European Cut Diamond Geometric Ring in 18K White Gold","description":"\u003cp\u003eSome Art Deco rings reveal themselves at first glance. Others reveal themselves the longer you study them. This remarkable 18K white gold aquamarine ring is one of those pieces, filled with unexpected details and an architectural complexity that is rarely encountered.\u003c\/p\u003e\n\u003cp\u003eSix pale icy-blue aquamarines come together in an intricate geometric composition, each shaped to occupy its own place within the design. Rather than surrounding a dominant center stone, the aquamarines become the design themselves, fitting together almost like pieces of a mosaic. At their precise intersection sits an unexpected Old European Cut diamond—a tiny jewel at the very heart of the ring.\u003c\/p\u003e\n\u003cp\u003eThe beauty continues well beyond the face. Strong Art Deco geometry gives way to an elaborate floral and foliate openwork gallery, while engraving carries the design into the shoulders. Viewed from above, from the side, or even from underneath, there is something new to discover.\u003c\/p\u003e\n\u003cp\u003eBeautifully balanced, wonderfully intricate, and distinctly different from the more familiar aquamarine rings of the period, this is a piece where no single element asks to dominate. Gemstones and metalwork work together as one complete composition—a remarkable survival of Art Deco craftsmanship and a natural addition to The TERA Collection.\u003c\/p\u003e\n\u003ch2\u003eAt a Glance\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAuthentic Art Deco, circa 1920s\u003c\/li\u003e\n\u003cli\u003eSix individually fitted custom-cut aquamarines, approximately 2.10 ctw estimated\u003c\/li\u003e\n\u003cli\u003e1.68 mm Old European Cut diamond at the center\u003c\/li\u003e\n\u003cli\u003e18K white gold\u003c\/li\u003e\n\u003cli\u003eGeometric face with floral and foliate openwork gallery\u003c\/li\u003e\n\u003cli\u003eLarge 19.46 × 13.24 mm face\u003c\/li\u003e\n\u003cli\u003eRing size 6.75\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eEra:\u003c\/strong\u003e Art Deco, circa 1920s\u003cbr\u003e\u003cstrong\u003eMetal:\u003c\/strong\u003e 18K White Gold\u003cbr\u003e\u003cstrong\u003eRing Size:\u003c\/strong\u003e 6.75\u003cbr\u003e\u003cstrong\u003eTotal Weight:\u003c\/strong\u003e 3.81 grams\u003cbr\u003e\u003cstrong\u003eRear Shank Height:\u003c\/strong\u003e Approximately 2.5 mm\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePrimary Gemstones:\u003c\/strong\u003e Six aquamarines\u003cbr\u003e\u003cstrong\u003eCut \/ Shape:\u003c\/strong\u003e Individually fitted custom geometric cuts\u003cbr\u003e\u003cstrong\u003eEstimated Total Aquamarine Weight:\u003c\/strong\u003e Approximately 2.10 carats total, estimated while mounted\u003cbr\u003e\u003cstrong\u003eAquamarine Color:\u003c\/strong\u003e Pale icy blue\u003cbr\u003e\u003cstrong\u003eTop \u0026amp; Bottom Aquamarines:\u003c\/strong\u003e Approximately 6 mm across at their widest points\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCenter Diamond:\u003c\/strong\u003e Old European Cut diamond\u003cbr\u003e\u003cstrong\u003eDiamond Measurement:\u003c\/strong\u003e Approximately 1.68 mm\u003cbr\u003e\u003cstrong\u003eEstimated Diamond Weight:\u003c\/strong\u003e Approximately 0.02 carat, estimated while mounted\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHead Dimensions:\u003c\/strong\u003e Approximately 19.46 × 13.24 mm\u003c\/p\u003e\n\u003ch2\u003eThe Aquamarines \u0026amp; Diamond\u003c\/h2\u003e\n\u003cp\u003eThe six aquamarines are among the ring's most distinctive features. Rather than relying on conventional gemstone shapes, each appears to have been individually cut and fitted to a particular position within the mounting. Together they create an almost geometric mosaic, with the outlines of the gemstones themselves becoming part of the architecture.\u003c\/p\u003e\n\u003cp\u003eUnder magnification, the ring's deliberate design is striking. Their broad, remarkably shallow proportions create tremendous face-up presence, while their unusual tapered, triangular, and shield-like outlines correspond to the surrounding metalwork. These are not simply six aquamarines placed into a setting—the shapes of the stones help create the setting's visual geometry.\u003c\/p\u003e\n\u003cp\u003eLarge geometric facets give the pale blue aquamarines an icy, watery play of light rather than the appearance of a conventionally proportioned aquamarine. Their subtle color also allows the white-gold framework between the stones to remain visually important. Stone and metal share the composition rather than competing with one another.\u003c\/p\u003e\n\u003cp\u003eAt the exact center is perhaps the most delightful surprise: an \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/old-european-cut-diamonds-explained\" target=\"_blank\" rel=\"noopener\"\u003eOld European Cut diamond\u003c\/a\u003e measuring approximately 1.68 mm. Despite its minute scale, magnification reveals a high crown, complex facet structure, and visible culet. Rather than functioning as the dominant gemstone, the diamond becomes the tiny focal point around which the entire composition is organized.\u003c\/p\u003e\n\u003cp\u003eNothing about the design feels accidental.\u003c\/p\u003e\n\u003ch2\u003eThe Setting\u003c\/h2\u003e\n\u003cp\u003eThe contrast between the face and gallery is one of the ring's most compelling aspects. From above, the design is unmistakably \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/how-to-identify-authentic-art-deco-jewelry\"\u003eArt Deco\u003c\/a\u003e: geometric, symmetrical, and architectural. Six individually fitted aquamarines surround the central Old European Cut diamond, while narrow sections of 18K white gold divide the stones and form the composition's framework. Learn more about the history and differences of metals used in the Art Deco era in our \u003ca rel=\"noopener\" href=\"https:\/\/theteracollection.com\/blogs\/journal\/platinum-vs-white-gold-antique-jewelry\" class=\"ng-star-inserted\" target=\"_blank\"\u003eplatinum vs. white gold antique jewelry guide\u003c\/a\u003e\u003cb\u003e\u003ca rel=\"noopener\" href=\"https:\/\/theteracollection.com\/blogs\/journal\/platinum-vs-white-gold-antique-jewelry\" class=\"ng-star-inserted\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/b\u003e.\u003c\/p\u003e\n\u003cp\u003eViewed from the side, the character changes dramatically. The strong geometry of the face gives way to an extraordinarily detailed floral and foliate openwork gallery. Curving organic forms and lace-like openings fill the structure beneath the gemstones, creating an unexpected softness beneath the angular design above.\u003c\/p\u003e\n\u003cp\u003eThe decoration continues into the shoulders, where engraved details bridge the elaborate head and the simpler shank. Even areas that are largely hidden when the ring is worn received considerable attention. \u003c\/p\u003e\n\u003cp\u003eThis kind of construction makes turning an antique ring over so important. The face may create the first impression, but the gallery, shoulders, and underside often reveal just as much about the thought and craftsmanship that went into the piece. Here, those hidden details are every bit as compelling as the gemstones above.\u003c\/p\u003e\n\u003cp\u003eUnder magnification, subtle variations appear in the openwork, stone shapes, borders, and individual details. Face-up, they resolve into remarkable balance and symmetry—the perfectly imperfect character that gives genuine period jewelry so much of its personality.\u003c\/p\u003e\n\u003ch2\u003eStyling \u0026amp; Wear\u003c\/h2\u003e\n\u003cp\u003eAt approximately 19.46 × 13.24 mm, this ring has significant finger presence without relying on a single dominant gemstone. The broad, shallow custom-cut aquamarines spread beautifully across the finger while keeping the emphasis on the overall composition.\u003c\/p\u003e\n\u003cp\u003eIts pale icy-blue color and 18K white gold construction make it remarkably versatile. It would make an exceptional alternative engagement ring, statement ring, or distinctive everyday piece for someone drawn to authentic Art Deco design and jewelry that is unlikely to be mistaken for anything ordinary.\u003c\/p\u003e\n\u003cp\u003eAs with any gemstone ring, antique or new, sensible care is appropriate. Prongs can loosen, stones can shift, and impact damage can occur regardless of a ring's age. Periodic inspection by a qualified jeweler is always recommended for jewelry worn regularly.\u003c\/p\u003e\n\u003ch2\u003eA Word on Resizing\u003c\/h2\u003e\n\u003cp\u003eThe ring is currently a size 6.75.\u003c\/p\u003e\n\u003cp\u003eBecause of the elaborate construction of the head and the decorative treatment extending down through the shoulders, resizing requires a careful touch. To better understand how the shank, gallery, and shoulders interact during sizing, refer to our guide on the \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/anatomy-of-an-antique-ring\" target=\"_blank\" rel=\"noopener\"\u003eanatomy of an antique ring\u003c\/a\u003e. Any significant adjustment must preserve not only the structural integrity of the shank, but also the symmetry of the shoulders and the original balance of the design.\u003c\/p\u003e\n\u003cp\u003ePlease contact The TERA Collection if you would like to discuss sizing before purchase.\u003c\/p\u003e\n\u003ch2\u003eNote on Photography\u003c\/h2\u003e\n\u003cp\u003eOur jewelry is photographed at high magnification to show craftsmanship, condition, and detail as clearly as possible. This can make normal signs of age, wear, tool marks, and variations in finish appear more prominent than they are to the unaided eye. Please refer to the measurements provided for an accurate sense of scale.\u003c\/p\u003e","brand":"TERA","offers":[{"title":"Default Title","offer_id":52971983536439,"sku":null,"price":1850.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/8889\/3239\/files\/Geometric_Art_Deco_Ring_circa_1920.jpg?v=1789074011"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/8889\/3239\/collections\/angle-stone-1.jpg?v=1785062982","url":"https:\/\/theteracollection.com\/collections\/old-european-cut-diamond-rings.oembed?page=2","provider":"TERA","version":"1.0","type":"link"}