{"product_id":"grs-certified-5-04-carat-sri-lanka-vivid-blue-sapphire-diamond-18k-white-ring","title":"GRS Certified 5.04 Carat Sri Lanka Vivid Blue Sapphire \u0026 Diamond 18K White Ring","description":"\u003cdiv\u003eGRS-certified 5.04 carat round vivid blue Sri Lanka sapphire prong-set in an 18K white gold double diamond halo cocktail ring, featuring 32 round brilliant accent diamonds and measuring 15.7mm x 16.5mm across the face. Size 7.5, adjustable.\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cstrong\u003eProduct Specifications:\u003c\/strong\u003e\u003c\/div\u003e\u003cul\u003e\n\u003cli\u003eItem Type: Cocktail Halo Ring\u003c\/li\u003e\n\u003cli\u003eMetal: 18K White Gold\u003c\/li\u003e\n\u003cli\u003eSize: 7.5 (adjustable)\u003c\/li\u003e\n\u003cli\u003eWeight: 7.50 grams\u003c\/li\u003e\n\u003cli\u003eRing Dimensions: 15.7mm x 16.5mm (total face)\u003c\/li\u003e\n\u003cli\u003eShank Style: Plain Tapered\u003c\/li\u003e\n\u003cli\u003eSetting Style: Four-Prong Center with Double Pave Diamond Halo\u003c\/li\u003e\n\u003cli\u003eCertification: GRS\/GIA Certificate \u003c\/li\u003e\n\u003cli\u003eOrigin: Sri Lanka (Ceylon)\u003c\/li\u003e\n\u003cli\u003ePeriod: Vintage (1990)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cstrong\u003eCenter Stone Details:\u003c\/strong\u003e\u003c\/div\u003e\u003cul\u003e\n\u003cli\u003eType: Natural Blue Sapphire\u003c\/li\u003e\n\u003cli\u003eCarat: 5.04 carats\u003c\/li\u003e\n\u003cli\u003eColor: Vivid Blue (Heat treated — H, per GRS)\u003c\/li\u003e\n\u003cli\u003eOrigin: Sri Lanka (Ceylon)\u003c\/li\u003e\n\u003cli\u003eCut: Round Brilliant\u003c\/li\u003e\n\u003cli\u003eCertification: GRS Certificate GRS2023-089437 \/ GIA #5222754974\u003c\/li\u003e\n\u003cli\u003eSetting: Four-Prong\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cstrong\u003eAccent Stone Details:\u003c\/strong\u003e\u003c\/div\u003e\u003cul\u003e\n\u003cli\u003eType: Natural Diamond\u003c\/li\u003e\n\u003cli\u003eQuantity: 32 stones\u003c\/li\u003e\n\u003cli\u003eCut: Round Brilliant\u003c\/li\u003e\n\u003cli\u003eSetting: Double Pave Halo — two rows surrounding the center sapphire\u003c\/li\u003e\n\u003cli\u003eNote: Larger outer halo diamonds and smaller inner halo diamonds create a tiered, dimensional double-halo effect with exceptional brilliance\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cstrong\u003eAbout the Setting:\u003c\/strong\u003e\u003c\/div\u003e\u003cdiv\u003eThe 18K white gold mounting features a bold architectural double halo — an inner row of smaller round brilliant diamonds and an outer row of larger round brilliant diamonds — creating a tiered, dome-like crown that elevates the center sapphire with dramatic depth and sparkle. The four-prong center setting lifts the 5.04 carat sapphire cleanly above the halo platform, allowing light to enter the stone from all sides and maximizing the gem's vivid blue saturation. The plain tapered shank keeps the design focused entirely on the jeweled face, ensuring the sapphire and diamond halo remain the undisputed focal point from every angle.\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cstrong\u003eAbout the Stones:\u003c\/strong\u003e\u003c\/div\u003e\u003cdiv\u003eThe 5.04 carat Sri Lanka sapphire is GRS-certified as vivid blue — the highest color designation in the GRS grading system — placing this stone among the most desirable sapphires in the world by both origin and color grade. Ceylon sapphires are historically the most prized sapphire origin, known for their pure, cornflower-to-vivid blue hues with exceptional transparency and brilliance that no other origin consistently replicates. This stone carries heat treatment (H) notation per GRS, which is the accepted and standard enhancement for fine sapphires and does not diminish its value or collectibility among serious buyers. The 32 surrounding round brilliant diamonds in the double halo amplify the sapphire's blue through contrast, framing it in white fire that draws the eye immediately to the deep, commanding center gem.\u003c\/div\u003e","brand":"ASSAY","offers":[{"title":"Default Title","offer_id":47598471545022,"sku":"GA1943-1","price":56000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0508\/5724\/6910\/files\/GRS-Certified-5_04-Carat-Sri-Lanka-Vivid-Blue-Sapphire-Diamond-18K-White-Ring-Ring.jpg?v=1780676610","url":"https:\/\/assayjewelers.com\/ja\/products\/grs-certified-5-04-carat-sri-lanka-vivid-blue-sapphire-diamond-18k-white-ring","provider":"ASSAY","version":"1.0","type":"link"}