{"title":"Art Deco Jewelry","description":"\u003cp\u003eDiscover Art Deco rings celebrated for their bold geometry, refined craftsmanship, and enduring elegance, reflecting one of jewelry history's most iconic design periods.\u003cbr\u003e\u003c\/p\u003e","products":[{"product_id":"antique-art-deco-sapphire-diamond-platinum-ring","title":"Antique, Bishop and Bishop, Art Deco, 10% Irid Platinum Natural Blue Sapphire \u0026 Diamond Ring","description":"\u003cp data-start=\"143\" data-end=\"520\"\u003eA true survivor of the \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/how-to-identify-authentic-art-deco-jewelry\" target=\"_blank\" rel=\"noopener\"\u003eArt Deco\u003c\/a\u003e era, this ring carries the unmistakable presence of a \u003cspan style=\"box-sizing: border-box; margin: 0px; padding: 0px;\"\u003e\u003cstrong\u003ehand-forged piece, not mass-produced, \u003c\/strong\u003eby the well-known Newark jewelry manufacturer Bishop \u0026amp; Bishop\u003c\/span\u003e—a rare example of craftsmanship from a time when jewelry was built with intention, not efficiency.  There’s an immediate sense of substance in hand—dense, solid, and quietly powerful—reflecting the superior materials and methods of the 1920s.\u003c\/p\u003e\n\u003cp data-start=\"522\" data-end=\"869\"\u003eAt its core is a vivid sapphire, elevated within a striking architectural “bridge” gallery. The design rises with purpose, echoing the bold geometry of the era’s skyline, as if the stone itself is suspended at the center of a miniature structure. Every angle reveals thoughtful hand-finishing—details that simply don’t exist in modern cast pieces.\u003c\/p\u003e\n\u003cp data-start=\"871\" data-end=\"959\"\u003eThis isn’t just vintage. It’s a piece of history you can feel the moment you pick it up.\u003c\/p\u003e\n\u003ch3\u003eSPECIFICATIONS\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal:\u003c\/strong\u003e 10% Iridium Platinum (Hallmarked)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 2.8 Grams\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMain Stone:\u003c\/strong\u003e Natural Blue Sapphire\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Vivid Royal Blue\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccents:\u003c\/strong\u003e 6 Original Single-Cut Diamonds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEra:\u003c\/strong\u003e Circa 1925\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer: \u003c\/strong\u003eBishop and Bishop- Authentic Bishop \u0026amp; Bishop Art Deco rings are increasingly difficult to find. This New Jersey-based maker, active in the early 20th century (circa 1910–1950s), was known for producing finely crafted pieces in gold and platinum, with a focus on quality construction and enduring design.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 6\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDETAILS\u003c\/h3\u003e\n\u003cp\u003eThis is an authentic Art Deco survivor featuring a hand-finished \"Bridge\" filigree gallery.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Stone:\u003c\/strong\u003e The sapphire shows natural internal inclusions (silk and feathers) under magnification, confirming earth-mined origin. The color remains a strong blue in all lighting profiles. At high magnification, the stone could be unheated, but this is not confirmed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Metal:\u003c\/strong\u003e Solid 10% Iridium Platinum with era-correct surface patina. The interior shank contains an original manufacturing die-strike irregularity from the forging process.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe Hallmarks:\u003c\/strong\u003e Stamped \"10% IRID PLAT\". Maker's marks are present but show significant wear and are currently illegible.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCONDITION \u0026amp; AUTHENTICITY\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThis is an authentic antique piece, approximately 100 years old. It has been preserved in its original state, showcasing an honest patina and the unique character of hand-fabricated jewelry.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNote on Authenticity:\u003c\/strong\u003e The interior shank shows a unique \u003cstrong\u003eperiod-correct miss-stamp\u003c\/strong\u003e from the original jeweler’s punch. This double-strike is a common characteristic of hand-finished early 20th-century jewelry and serves as a \"fingerprint\" of its authentic, manual creation.\u003c\/li\u003e\n\u003cli\u003eThe head shows evidence of a historic repair, likely completed using a different metal alloy. The repair is only visible under certain lighting conditions and close examination, and does not impact the ring's structural integrity or wearability.\u003c\/li\u003e\n\u003cli\u003eThe shank shows some thinning.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"The Tera Collection","offers":[{"title":"Default Title","offer_id":51999583011127,"sku":null,"price":1150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/8889\/3239\/files\/Platinum_Sapphiree_Ring.png?v=1780228776"},{"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 separates itself. 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\u003cbr\u003eAuthentic Belais Brothers ring — LAIS 18K hallmark \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCirca 1915–1925\u003c\/li\u003e\n\u003cli\u003eOld European cut diamond\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\/Belais_Diamond_Ring.png?v=1780228904"},{"product_id":"art-deco-sapphire-ring-18k-white-gold-filigree","title":"Vintage Art Deco 18K White Gold Blue Sapphire Solitaire Filigree Ring","description":"\u003cp\u003eA true Art Deco original, this early white gold ring reflects the shift toward balance, precision, and architectural form that defined the period. Its presence is refined and controlled, centered on a deep blue sapphire set within a raised prong mount.\u003c\/p\u003e\n\u003cp\u003eThe sapphire draws the eye without excess. Its faceting produces a darker, tonal light—subtle rather than sharp—offering depth and quiet movement as it turns.\u003c\/p\u003e\n\u003cp\u003eThe structure is where the piece distinguishes itself. Open filigree runs through the gallery and shoulders, reducing visual weight while preserving strength. Every element is considered, resulting in a ring that feels both delicate and composed.\u003c\/p\u003e\n\u003cp\u003eUnbranded, yet entirely consistent with American Art Deco construction in both material and form.\u003c\/p\u003e\n\u003ch2\u003eAt a Glance\u003c\/h2\u003e\n\u003cp\u003eArt Deco sapphire ring — 18K white gold\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCirca 1920s–1930s\u003c\/li\u003e\n\u003cli\u003eNatural, round blue sapphire\u003c\/li\u003e\n\u003cli\u003eApprox. 4.5 mm\u003c\/li\u003e\n\u003cli\u003e18K white gold\u003c\/li\u003e\n\u003cli\u003eOpen filigree gallery\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 (tested)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEra:\u003c\/strong\u003e Circa 1920s–1930s\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter Stone:\u003c\/strong\u003e Blue Sapphire (Round Cut)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEstimated Size:\u003c\/strong\u003e ~4.5 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEstimated Carat Weight:\u003c\/strong\u003e ~0.28 ct\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSetting:\u003c\/strong\u003e Raised Prong Solitaire\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Size:\u003c\/strong\u003e 5.5\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\u003eAn authentic Art Deco ring defined by proportion, restraint, and structural clarity.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Stone\u003c\/strong\u003e\u003cbr\u003eA deep bluetone with darker saturation and natural tonal variation. Light is absorbed and released gradually, creating depth rather than surface brilliance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Setting\u003c\/strong\u003e\u003cbr\u003eA raised prong mount positions the stone intentionally, allowing light to interact with it while maintaining a controlled profile.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Shoulders\u003c\/strong\u003e\u003cbr\u003eOpen filigree and fine engraving taper into a slender band, introducing lightness without compromising structure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Craftsmanship\u003c\/strong\u003e\u003cbr\u003eHand-finished construction, with precision and detailing that reflect early 20th-century fabrication methods rather than modern casting.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Hallmark\u003c\/strong\u003e\u003cbr\u003eUnbranded. Metal tests as 18K white gold. Construction and materials are consistent with the period.\u003c\/p\u003e\n\u003ch2\u003eCondition\u003c\/h2\u003e\n\u003cp data-start=\"368\" data-end=\"755\"\u003eGood vintage condition with age-appropriate wear consistent with decades of careful use. The sapphire shows minor facet edge chipping and abrasions visible under magnification, including localized wear near the lower portion of the stone. These characteristics are not readily noticeable during normal wear and do not diminish the ring's overall visual presence.\u003c\/p\u003e\n\u003cp data-start=\"762\" data-end=\"999\"\u003eThe mounting shows scattered surface wear, including a more visible scratch along one side of the engraved shoulder. The scratch is apparent under close inspection but blends naturally into the piece's overall character when worn.\u003c\/p\u003e\n\u003cp data-start=\"1006\" data-end=\"1220\"\u003eThe interior of the shank shows small historic drill marks, likely associated with prior jeweler testing or evaluation. The marks are shallow and do not affect the ring's structural integrity or wearability.\u003c\/p\u003e\n\u003cp data-start=\"1227\" data-end=\"1348\"\u003eThe original openwork mounting and engraved details remain intact, and the ring continues to present beautifully on hand.\u003c\/p\u003e","brand":"The Tera Collection","offers":[{"title":"Default Title","offer_id":52066578432311,"sku":null,"price":1095.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/8889\/3239\/files\/Moody_Lifestyle_Shot_Sapphire_Filigree_Ring.png?v=1778754253"},{"product_id":"antique-art-deco-sapphire-ring-14k-white-gold-filigree","title":"Antique Sapphire Filigree Ring in 14K White Gold","description":"\u003cp\u003eThis is a true Art Deco original—an early 14K white gold ring from the 1930s, when design emphasized precision, structure, and finely detailed craftsmanship. The piece is defined by its balanced, architectural presence, centered around a richly colored blue sapphire set within a sculpted prong head.\u003c\/p\u003e\n\u003cp\u003eThere’s a quiet confidence to this ring. The sapphire draws you in rather than overwhelms, its saturated blue tone producing a deep, consistent glow under changing light. It’s not just color—it’s depth—calm, steady, and refined as it moves.\u003c\/p\u003e\n\u003cp\u003eThe architecture is where this ring separates itself. Delicate filigree work flows through the shoulders, paired with engraved detailing that adds texture without excess. The head is slightly elevated, giving the stone presence while maintaining a low, wearable profile. This is craftsmanship from a time when each element was finished by hand, not cast.\u003c\/p\u003e\n\u003cp\u003eThe 14K hallmark confirms gold purity, and the overall construction is consistent with authentic Art Deco period work—light, detailed, and intentionally built.\u003c\/p\u003e\n\u003ch2\u003eAt a Glance\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAuthentic Art Deco sapphire solitaire — filigree shoulders with engraved detail\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCirca 1930s\u003c\/li\u003e\n\u003cli\u003eRound Cut Blue Sapphire\u003c\/li\u003e\n\u003cli\u003eApprox. 5.0 mm center stone\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e14K White Gold\u003c\/li\u003e\n\u003cli\u003eFiligree and engraved shoulder 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 14K White Gold, hallmarked\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEra:\u003c\/strong\u003e Circa 1930s\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter Stone:\u003c\/strong\u003e Blue Sapphire, Round Cut\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEstimated Stone Size:\u003c\/strong\u003e Approx. 5.0 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSetting Measurement:\u003c\/strong\u003e Approx. 5.5 mm across, prong-to-prong\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEstimated Carat Weight:\u003c\/strong\u003e Approx. 0.45–0.55 ct\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSetting:\u003c\/strong\u003e Prong Set Solitaire\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Size:\u003c\/strong\u003e 7\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 2.0 grams\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDetails\u003c\/h2\u003e\n\u003cp\u003eThis is an authentic Art Deco ring, showcasing the refined craftsmanship and structural elegance that defined the period.\u003c\/p\u003e\n\u003ch3\u003eThe Stone:\u003c\/h3\u003e\n\u003cp\u003eThe sapphire presents a strong, saturated blue color with a clean, even tone. Its size offers presence without excess, making it well suited for both everyday wear and special occasions.\u003c\/p\u003e\n\u003ch3\u003eThe Setting:\u003c\/h3\u003e\n\u003cp\u003eThe prong-set head elevates the stone slightly, allowing light to interact with the sapphire while maintaining a practical, secure profile.\u003c\/p\u003e\n\u003ch3\u003eThe Shoulders:\u003c\/h3\u003e\n\u003cp\u003eThe shoulders feature fine filigree and engraved detailing, adding depth and dimension. The openwork design lightens the structure visually while maintaining strength.\u003c\/p\u003e\n\u003ch3\u003eThe Craftsmanship:\u003c\/h3\u003e\n\u003cp\u003eThis ring reflects traditional fabrication methods, with hand-finished details and a level of precision that differs from modern mass-produced pieces.\u003c\/p\u003e\n\u003ch3\u003eThe Hallmark:\u003c\/h3\u003e\n\u003cp\u003eThe “14K” stamp confirms gold purity. The construction and detailing are consistent with early 20th-century manufacture.\u003c\/p\u003e\n\u003ch2\u003eCondition\u003c\/h2\u003e\n\u003cp\u003eVery good antique condition.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLight surface wear consistent with age\u003c\/li\u003e\n\u003cli\u003eSapphire is secure and well-set\u003c\/li\u003e\n\u003cli\u003eFiligree and engraving remain well-preserved\u003c\/li\u003e\n\u003cli\u003eStructure is sound with no major thinning or damage\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"The Tera Collection","offers":[{"title":"Default Title","offer_id":52067253780791,"sku":null,"price":975.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/8889\/3239\/files\/Antique_Sapphire_Ring_in_14K_White_Gold_Early_Art_Deco_Vintage_Ring.png?v=1778847444"},{"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 Old European-cut diamond set within a square frame.\u003c\/p\u003e\n\u003cp\u003eThere is a restraint to the design that 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 data-start=\"392\" data-end=\"446\"\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.\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 Art Deco era, 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 Old European Cut diamond 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 Early Art Deco diamond ring crafted in uncommon 19K white gold and set with approximately 2.0–2.15 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 1.10–1.25 carat Old European Cut diamond 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\u003eUnknown Hallmark\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 2.15–2.30 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 Art Deco engagement ring 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":"art-deco-palladium-sapphire-diamond-ring","title":"Art Deco Palladium Sapphire \u0026 Diamond Ring","description":"\u003cp\u003eA finely executed \u003ca href=\"https:\/\/theteracollection.com\/blogs\/journal\/how-to-identify-authentic-art-deco-jewelry\"\u003eArt Deco\u003c\/a\u003e ring crafted in palladium and centered by three square-cut blue sapphires arranged within a geometric diamond-set panel. Dating to the early decades of the twentieth century, the ring captures the architectural precision and disciplined symmetry that define the Art Deco period while maintaining a highly wearable scale suited to modern everyday wear.\u003c\/p\u003e\n\u003cp\u003eThe elongated plaque is framed by delicate milgrain detailing and accented by eight diamonds that provide subtle flashes of brilliance against the cool white palladium mounting. Beneath the top panel, an open pierced gallery introduces depth and dimension while showcasing the thoughtful craftsmanship characteristic of well-made period jewelry.\u003c\/p\u003e\n\u003cp\u003eRather than relying on excessive ornamentation, the ring succeeds through proportion, geometry, and structural balance. The crisp linear design, sapphire and diamond contrast, and distinctive palladium construction create a composition that feels unmistakably Art Deco from every angle.\u003c\/p\u003e\n\u003ch3\u003eAt A Glance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eArt Deco sapphire and diamond ring\u003c\/li\u003e\n\u003cli\u003ePalladium mounting\u003c\/li\u003e\n\u003cli\u003eThree square-cut blue sapphires\u003c\/li\u003e\n\u003cli\u003eEight accent diamonds\u003c\/li\u003e\n\u003cli\u003eGeometric plaque design\u003c\/li\u003e\n\u003cli\u003eFine milgrain detailing\u003c\/li\u003e\n\u003cli\u003ePierced gallery construction\u003c\/li\u003e\n\u003cli\u003eAuthentic period craftsmanship\u003c\/li\u003e\n\u003cli\u003eSize 6.75\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEra:\u003c\/strong\u003e Art Deco\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApproximate Date:\u003c\/strong\u003e Circa 1920–1935\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal:\u003c\/strong\u003e Palladium\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMain Stones:\u003c\/strong\u003e Three square-cut blue sapphires\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSapphire Measurements:\u003c\/strong\u003e Approximately 6.4mm x 6.4mm center section\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccent Stones:\u003c\/strong\u003e Eight diamonds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiamond Size:\u003c\/strong\u003e Approximately 1mm each\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Weight:\u003c\/strong\u003e 2.87 grams\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSetting Type:\u003c\/strong\u003e Geometric panel setting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Hand-finished pierced gallery mounting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Size:\u003c\/strong\u003e 6.75\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDetails\u003c\/h3\u003e\n\u003ch4\u003eThe Sapphires\u003c\/h4\u003e\n\u003cp\u003eThe ring is centered by three square-cut blue sapphires that immediately draw the eye against the cool white palladium mounting. Their rich blue coloration provides strong visual contrast while reinforcing the geometric symmetry that defines the overall design.\u003c\/p\u003e\n\u003cp\u003eTesting confirms the stones are corundum, the mineral species of sapphire. While the sapphires have not been conclusively determined to be natural or synthetic, they remain entirely appropriate to the period and highly complementary to the mounting.\u003c\/p\u003e\n\u003cp\u003eWhen examined under magnification, one sapphire appears slightly lighter than the others. In normal wear, however, the stones present as a cohesive group and contribute positively to the authentic character often encountered in antique jewelry.\u003c\/p\u003e\n\u003ch4\u003eThe Diamonds\u003c\/h4\u003e\n\u003cp\u003eEight small diamonds frame the sapphire panel, introducing subtle points of brightness throughout the composition. Though modest in size, they play an important architectural role by defining the plaque's shape and creating visual movement as the ring catches the light.\u003c\/p\u003e\n\u003cp\u003eThe diamonds enhance the design's overall sophistication while remaining secondary to the sapphires' strong geometric presence.\u003c\/p\u003e\n\u003ch4\u003eThe Setting\u003c\/h4\u003e\n\u003cp\u003eThe elongated plaque exemplifies the disciplined geometry that made Art Deco jewelry so distinctive. Multiple layers of milgrain detailing surround the sapphire panel, creating depth and visual complexity without overwhelming the composition.\u003c\/p\u003e\n\u003cp\u003eEvery decorative element serves the overall structure of the design. Rather than relying on excessive ornamentation, the ring achieves its visual impact through symmetry, proportion, and thoughtful craftsmanship.\u003c\/p\u003e\n\u003ch4\u003eThe Gallery \u0026amp; Construction\u003c\/h4\u003e\n\u003cp\u003eBeneath the top panel, the mounting features attractive pierced gallery work that introduces lightness and dimension while revealing the hand-finished nature of the ring's construction.\u003c\/p\u003e\n\u003cp\u003eThe shoulders transition cleanly into the central plaque through geometric forms that reinforce the ring's architectural character. These details remain clearly visible and contribute substantially to the ring's period authenticity.\u003c\/p\u003e\n\u003cp\u003ePalladium became increasingly popular during the early twentieth century as a durable white metal capable of supporting the intricate openwork and geometric styling favored during the Art Deco era. Its naturally white appearance complements both the sapphires and diamonds while emphasizing the ring's crisp structural lines.\u003c\/p\u003e\n\u003ch3\u003eCondition\u003c\/h3\u003e\n\u003cp\u003eVery good antique condition consistent with careful long-term preservation.\u003c\/p\u003e\n\u003cp\u003eThe mounting remains structurally sound with milgrain detail, pierced gallery work, and decorative elements remaining clearly visible throughout. Minor surface wear consistent with age and normal use is visible under magnification.\u003c\/p\u003e\n\u003cp\u003eThe sapphires and diamonds remain secure within their settings, and the ring presents beautifully when worn with no condition issues materially detracting from its overall beauty, craftsmanship, or historical character.\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":52456475590967,"sku":null,"price":875.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/8889\/3239\/files\/2026-05-18-11-29-07-_B_R8_S4_-1.jpg?v=1781266219"},{"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\" target=\"_blank\" rel=\"noopener\"\u003eArt Deco\u003c\/a\u003e period. Crafted in platinum, the ring is centered by a lively Old European Cut diamond 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\u003eCrafted in platinum, 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\"10% IRID. PLAT.\"\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":"edwardian-sapphire-diamond-two-tone-14k-gold","title":"Late Edwardian Sapphire \u0026 Diamond Three Stone Ring in Two-Tone 14K Gold","description":"\u003cp\u003eElegant and thoughtfully proportioned, this late Edwardian to early Art Deco sapphire and diamond ring reflects the refined craftsmanship of the early twentieth century. Crafted in two-tone 14K gold, the ring is centered by a square blue sapphire accented by two old-cut diamonds, while delicate milgrain and graceful openwork create an elegant composition that remains timeless more than a century later.\u003c\/p\u003e\n\u003cp\u003eRather than relying on large gemstones, the ring creates its presence through thoughtful proportions, crisp period detailing, and the pleasing contrast between the white gold setting and yellow gold shank. The square sapphire serves as a vibrant focal point, while the old-cut diamonds provide gentle flashes of light that enhance the design without overwhelming its delicate character.\u003c\/p\u003e\n\u003cp\u003eMore than a beautiful antique ring, this piece represents an era when jewelry was crafted by hand with remarkable attention to detail. Its authentic period construction, refined proportions, and enduring design make it an elegant choice for everyday wear or for anyone drawn to the character that only genuine antique jewelry can offer.\u003c\/p\u003e\n\u003ch2\u003eAt A Glance\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAuthentic Antique Sapphire \u0026amp; Diamond Ring\u003c\/li\u003e\n\u003cli\u003eBlue Sapphire Center Stone\u003c\/li\u003e\n\u003cli\u003eTwo Old-Cut Natural Diamonds\u003c\/li\u003e\n\u003cli\u003eTwo-Tone 14K Gold\u003c\/li\u003e\n\u003cli\u003eHand-Applied Milgrain \u0026amp; Openwork Details\u003c\/li\u003e\n\u003cli\u003eCirca 1915–1925\u003c\/li\u003e\n\u003cli\u003eSize 5.5\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 Two-Tone 14K Gold\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHallmarks:\u003c\/strong\u003e 14K\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEra:\u003c\/strong\u003e Late Edwardian to Early Art Deco, Circa 1915–1925\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter Stone:\u003c\/strong\u003e Blue Sapphire\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter Stone Measurements:\u003c\/strong\u003e Approximately 2.83 mm square\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccent Stones:\u003c\/strong\u003e Two old-cut natural diamonds measuring approximately 1.66 mm each\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Weight:\u003c\/strong\u003e 2.21 grams\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Size:\u003c\/strong\u003e 5.5\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eThe Sapphire \u0026amp; Diamonds\u003c\/h2\u003e\n\u003cp\u003eThe ring is centered by a square blue sapphire measuring approximately 2.83 mm. Its rich blue color provides a pleasing contrast against the bright white gold setting, while two old-cut natural diamonds add soft period brilliance that complements the center stone.\u003c\/p\u003e\n\u003cp\u003eThe center stone tests as sapphire. Examination under 10× magnification reveals straight rutile silk, an inclusion pattern commonly associated with natural sapphire. No laboratory origin report accompanies the ring.\u003c\/p\u003e\n\u003cp\u003eThe old-cut diamonds display the broad, gentle flashes of light characteristic of antique diamond cutting, adding sparkle while preserving the understated elegance of the overall design.\u003c\/p\u003e\n\u003ch2\u003eThe Design\u003c\/h2\u003e\n\u003cp\u003eCrafted during the transition from the Edwardian era into early Art Deco, this ring beautifully combines the graceful detailing of the earlier period with the cleaner geometry that would soon define Art Deco jewelry. The two-tone construction emphasizes the gemstones while creating visual depth, and the fine hand-applied milgrain highlights the careful craftsmanship throughout the setting.\u003c\/p\u003e\n\u003cp\u003eAlthough modest in size, the ring possesses an elegant presence through its balanced proportions and refined period details. Its low-profile design makes it comfortable for everyday wear while remaining unmistakably antique in character.\u003c\/p\u003e\n\u003ch2\u003eCondition\u003c\/h2\u003e\n\u003cp\u003eVery good antique condition consistent with age and careful preservation.\u003c\/p\u003e\n\u003cp\u003eThe setting retains crisp milgrain and decorative details, and the sapphire and diamonds appear secure in their settings. Light surface wear is present, consistent with a ring that has been carefully worn and enjoyed for more than a century.\u003c\/p\u003e\n\u003ch2\u003ePhotography Note\u003c\/h2\u003e\n\u003cp\u003ePhotographed under soft-spectrum lighting and high magnification to accurately capture the gemstones, 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":52578183840055,"sku":null,"price":595.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/8889\/3239\/files\/Hero-jpg.jpg?v=1782759502"},{"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":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/8889\/3239\/files\/Hero.jpg?v=1783699600"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/8889\/3239\/collections\/Straight-on-1_9031c0e3-dd18-44c0-8ea1-4f6dd3224e94.jpg?v=1781173433","url":"https:\/\/theteracollection.com\/collections\/art-deco.oembed?page=2","provider":"The TERA Collection","version":"1.0","type":"link"}