{"product_id":"2-51-carat-oval-blue-sapphire-mixed-diamond-platinum-filigree-ring","title":"2.51 Carat Oval Blue Sapphire \u0026 Mixed Diamond Platinum Filigree Ring","description":"\u003cdiv\u003eGIA Certified Natural 2.51 carat oval blue sapphire measuring 9.6 x 5.6mm is set in a platinum 900 vintage ring with 0.45 carats of mixed square step-cut and round brilliant diamonds arranged in a structured stepped filigree shoulder gallery, weighing 5.17 grams. \u003cstrong\u003eGIA Report #:\u003c\/strong\u003e 2245017943\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003eRing Size 4, 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: Vintage Cocktail \/ Engagement Ring\u003c\/li\u003e\n\u003cli\u003eMetal: Platinum 900 (PT900) — hallmark stamped on inner shank\u003c\/li\u003e\n\u003cli\u003eShank Style: Plain high-polish shank with structured stepped filigree gallery shoulders\u003c\/li\u003e\n\u003cli\u003eGallery Detail: Architectural stepped platform with mixed diamond setting\u003c\/li\u003e\n\u003cli\u003eSize: 4 (adjustable)\u003c\/li\u003e\n\u003cli\u003eTotal Weight: 5.17 grams\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: Sapphire (Natural Corundum)\u003c\/li\u003e\n\u003cli\u003eCarat: 2.51\u003c\/li\u003e\n\u003cli\u003eColor: Blue\u003c\/li\u003e\n\u003cli\u003eCut: Oval, Brilliant Crown \/ Modified Brilliant Pavilion\u003c\/li\u003e\n\u003cli\u003eTransparency: Transparent\u003c\/li\u003e\n\u003cli\u003eMeasurements: 9.63mm x 5.62mm x 5.19mm\u003c\/li\u003e\n\u003cli\u003eTreatment: No Indications of Heating\u003c\/li\u003e\n\u003cli\u003eOrigin: Burma (Myanmar)\u003c\/li\u003e\n\u003cli\u003eGIA Certified\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003cstrong\u003eGIA Report #:\u003c\/strong\u003e 2245017943\u003c\/div\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: Diamond (mixed cuts)\u003c\/li\u003e\n\u003cli\u003eCuts: Square step-cut (carre\/emerald style) and round brilliant\u003c\/li\u003e\n\u003cli\u003eTotal Carat Weight: 0.45 carats\u003c\/li\u003e\n\u003cli\u003eArrangement: Square step-cut diamonds at outer shoulder blocks; round brilliant diamonds flanking center stone sides in vertical pairs\u003c\/li\u003e\n\u003cli\u003eMetal: Platinum 900\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cstrong\u003eAbout The Stone\u003c\/strong\u003e\u003c\/div\u003e\u003cdiv\u003eThis 2.51 carat oval blue sapphire is an exceptional example of the gem at its most desirable — measuring a long, elegant 9.6 x 5.5mm with an elongated oval profile that maximizes face-up coverage and creates a finger-lengthening effect that suits the vintage stepped shoulder setting perfectly. The color is a vibrant, vivid blue with strong saturation and excellent transparency, transitioning between cornflower and royal blue tones depending on the light source and viewing angle — the kind of natural color variation that gemologists prize in fine, unheated-quality sapphires. At nearly 4 carats, this stone occupies a size tier where fine blue sapphires are genuinely uncommon in the resale market, and in combination with the architectural platinum setting and mixed diamond accents, this ring represents a compelling opportunity for both collectors and discerning wearers.\u003c\/div\u003e","brand":"ASSAY","offers":[{"title":"Default Title","offer_id":49185230028990,"sku":"POTC2571R","price":5216.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0508\/5724\/6910\/files\/2_51-Carat-Oval-Blue-Sapphire-Mixed-Diamond-Platinum-Filigree-Ring-Ring.jpg?v=1790698782","url":"https:\/\/assayjewelers.uk\/products\/2-51-carat-oval-blue-sapphire-mixed-diamond-platinum-filigree-ring","provider":"ASSAY","version":"1.0","type":"link"}