{"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 blue stones are consistent with synthetic sapphires commonly used during the Art Deco period. Their use reflects a design decision focused on contrast and consistency within geometric layouts.\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 TERRA 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","url":"https:\/\/theteracollection.com\/products\/art-deco-diamond-ring-blue-sapphire-18k-white-gold","provider":"The TERA Collection","version":"1.0","type":"link"}