{"product_id":"mid-century-gia-3-85-carat-no-heat-sapphire-diamond-18k-white-gold-ring","title":"Mid Century GIA 3.85 carat no heat sapphire diamond 18k white gold ring","description":"\u003cdiv\u003eNatural, untreated star sapphires of this size are genuinely uncommon, which makes this 3.85-carat stone especially noteworthy. GIA has certified the sapphire as Sri Lankan in origin with no indication of heat treatment, meaning its rich blue color and six-rayed star are entirely the work of nature, unenhanced by the heating processes used on the great majority of sapphires in the trade.\u003c\/div\u003e\u003cdiv\u003eThe center stone is surrounded by eighteen round brilliant cut diamonds weighing approximately 0.50 carat total, G-H color and VS-SI clarity, set to frame the sapphire and add continuous sparkle around its cabochon dome. Crafted in 18k white gold and fully hallmarked, the ring dates to circa 1950 and carries the confident, well-proportioned design sensibility of Mid-Century fine jewelry. At 12.81 grams, it has genuine substance without feeling oversized.\u003c\/div\u003e\u003cdiv\u003eCurrently sized 8.25 and sizable, this ring is a rare opportunity for a gemstone connoisseur: a certified natural, no-heat star sapphire of significant size, from a storied source, presented in a period setting built to showcase it for another lifetime of wear.\u003c\/div\u003e","brand":"Jack Weir \u0026 Sons","offers":[{"title":"Default Title","offer_id":49193834021083,"sku":"37512","price":6800.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0944\/1720\/files\/37512_3718444.jpg?v=1787940524","url":"https:\/\/jackweirandsons.com\/zh-hans\/products\/mid-century-gia-3-85-carat-no-heat-sapphire-diamond-18k-white-gold-ring","provider":"Jack Weir \u0026 Sons","version":"1.0","type":"link"}