{"product_id":"1-57ct-natural-bi-colour-sapphire-unheated-oval-cut","title":"1.57ct Natural Bi-Colour Sapphire | Unheated | Oval Cut","description":"\u003cp\u003eA stunning 1.57-carat natural bi-colour sapphire showcasing the finest qualities of unheated gemstone excellence. This oval-cut specimen displays the characteristic colour zoning that makes bi-colour sapphires so prized by collectors and jewellers alike. Unheated and untreated, this sapphire retains its natural integrity and represents genuine value for those seeking authentic gemstones.\u003c\/p\u003e\u003cp\u003eThe oval cut maximises colour saturation whilst offering excellent light performance and versatility for bespoke jewellery design. Perfect for engagement rings, statement pieces, or as a centrepiece for a custom creation. Each stone is unique—this particular example combines rarity, natural beauty, and the timeless appeal of sapphire.\u003c\/p\u003e\u003ch2\u003eGemstone Details\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eVariety:\u003c\/strong\u003e Natural Bi-Colour Sapphire\u003cbr\u003e\u003cstrong\u003eCarat Weight:\u003c\/strong\u003e 1.57 ct\u003cbr\u003e\u003cstrong\u003eShape:\u003c\/strong\u003e Oval\u003cbr\u003e\u003cstrong\u003eColour:\u003c\/strong\u003e Green-Yellow with Blue Hue\u003cbr\u003e\u003cstrong\u003eClarity:\u003c\/strong\u003e VVS – eye-clean, no inclusions\u003cbr\u003e\u003cstrong\u003eTreatment:\u003c\/strong\u003e Unheated \u0026amp; untreated\u003cbr\u003e\u003cstrong\u003eOrigin:\u003c\/strong\u003e Sri Lanka (Ceylon)\u003cbr\u003e\u003cstrong\u003eCertification:\u003c\/strong\u003e ZGL lab certification\u003c\/p\u003e\u003ch2\u003eHighlights\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eNatural, unheated, untreated sapphire\u003c\/li\u003e\n\u003cli\u003eElegant oval cut with lively brilliance\u003c\/li\u003e\n\u003cli\u003eUnique green\/yellow and blue colour zoning\u003c\/li\u003e\n\u003cli\u003eVVS clarity with exceptional transparency\u003c\/li\u003e\n\u003cli\u003ePremium-quality bi-colour sapphire\u003c\/li\u003e\n\u003cli\u003eIdeal for engagement rings or statement jewellery\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eExplore our full \u003ca href=\"\/collections\/sapphire\"\u003eSapphire Collection\u003c\/a\u003e or discover more rare finds in our \u003ca href=\"\/collections\/rare-collectable\"\u003eRare \u0026amp; Collectable Gems\u003c\/a\u003e range.\u003c\/p\u003e","brand":"Lustrous Stones","offers":[{"title":"Default Title","offer_id":49301445968115,"sku":"SAP-1.57-OVL-BICO-UH","price":1490.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0802\/1422\/9235\/files\/ChatGPTImageJun27_2026_07_40_56AM.png?v=1782510816","url":"https:\/\/lustrousstone.com\/products\/1-57ct-natural-bi-colour-sapphire-unheated-oval-cut","provider":"Lustrous Stones","version":"1.0","type":"link"}