{"product_id":"natural-13-31-ct-blue-sapphire-no-heat-sri-lanka-gia-diamond-ring-platinum","title":"Natural 13.31 CT Blue Sapphire NO HEAT Sri Lanka GIA Diamond Ring Platinum","description":"\u003cdiv class=\"product-description\"\u003e\n\n\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eAn exceptional statement ring centered around a 13.31 carat natural blue sapphire of Sri Lankan origin, certified by GIA as no heat \/ no treatment. The richly saturated cushion-cut sapphire displays remarkable depth of color and brilliance.\u003c\/p\u003e\n\n\u003cp\u003eSurrounding the center stone is a bold halo of natural earth-mined round brilliant cut diamonds, totaling approximately 2.75 carats, graded white color with VS2–SI1 clarity, adding intense sparkle and contrast against the vivid blue center.\u003c\/p\u003e\n\n\u003cp\u003eCrafted in platinum, the setting enhances both durability and brightness, completing a timeless and highly collectible high-jewelry piece.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003eMetal: Platinum 850\u003cbr\u003e\nStamped: 10% Iridium, 90% Platinum; Numbered 539\u003cbr\u003e\nSize: 6\u003cbr\u003e\nWeight: 12.1 grams\u003cbr\u003e\nRing Measurements: 20.1 mm tall x 20.8 mm wide x 11.2 mm thickness (front)\u003c\/p\u003e\n\n\u003ch3\u003eGemstones\u003c\/h3\u003e\n\u003cp\u003eNatural Earth Mined Diamonds:\u003cbr\u003e\nShape: Round Brilliant Cut\u003cbr\u003e\nDiamond Weight: 2.75 CT Approximately\u003cbr\u003e\nColor: White\u003cbr\u003e\nClarity: VS2-SI1\u003c\/p\u003e\n\n\u003cp\u003eNatural Blue Sapphire:\u003cbr\u003e\nShape: Cushion Cut\u003cbr\u003e\nMeasurements: 12.51 x 10.96 x 10.56 mm\u003cbr\u003e\nWeight: 13.31 CT\u003cbr\u003e\nGeographic Origin: Sri Lanka\u003cbr\u003e\nTreatment: No Heat - No Treatment\u003cbr\u003e\nCertificate: GIA\u003c\/p\u003e\n\n\u003ch3\u003eAdditional Details\u003c\/h3\u003e\n\u003cp\u003eNote: While the ring is stamped 10% iridium 90% platinum, our metal analyzing machine reads variable readings from 85%-90% platinum. This is quite common with handmade vintage and antique mountings as modern testing will produce variable readings depending on testing location.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Nicolas Estate Buyers","offers":[{"title":"Default Title","offer_id":52850826248511,"sku":null,"price":90000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0709\/0084\/2815\/files\/Photoroom_000_20260403_155533.jpg?v=1777048416","url":"https:\/\/nicholasestatebuyers.com\/products\/natural-13-31-ct-blue-sapphire-no-heat-sri-lanka-gia-diamond-ring-platinum","provider":"Nicholas Estate Buyers","version":"1.0","type":"link"}