{"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","url":"https:\/\/theteracollection.com\/products\/art-deco-aquamarine-diamond-mosaic-ring","provider":"TERA","version":"1.0","type":"link"}