{"product_id":"5-39-ct-round-ceylon-blue-sapphire-unheated-gia","title":"5.39 ct Natural Unheated Blue Sapphire – Round Cut | GIA Certified | Ceylon (Sri Lanka)","description":"\u003cp\u003eA natural 5.39 carat blue sapphire in a round shape with Mixed Cut faceting (Modified Brilliant crown, Step Cut pavilion), from Sri Lanka (Ceylon), completely unheated and certified by GIA, Report #5231646038. At 5.39 carats, this is an exceptional size for any sapphire; combined with unheated status and GIA documentation, it represents a genuinely rare specification — unheated Ceylon sapphires above 5 carats rarely appear at market.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhy Choose this 5.39 ct Unheated Ceylon Blue Sapphire?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\n\u003cp\u003eThe rarity of this stone comes from three combined factors: 5+ carats (size), unheated status (natural color), and GIA documentation (confirmed quality). At the 5+ carat level in unheated blue sapphire from Ceylon, each of these factors individually already narrows the available pool; together they represent a stone that will rarely appear at market again.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eKey Benefits of this Natural Blue Sapphire\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnheated Ceylon Origin, GIA Documented\u003c\/strong\u003e\u003cbr\u003eNo thermal treatment. GIA confirms weight, dimensions, origin, and treatment status (Report #5231646038).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExceptional 5+ Carat Size\u003c\/strong\u003e\u003cbr\u003eUnheated sapphires above 5 carats are genuinely rare.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMixed Cut Faceting\u003c\/strong\u003e\u003cbr\u003eModified Brilliant crown with Step Cut pavilion maximizes brightness and fire.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInvestment-Grade Specification\u003c\/strong\u003e\u003cbr\u003eAll three premium criteria — size, unheated, certified — present in a single stone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable for Daily Wear\u003c\/strong\u003e\u003cbr\u003eCorundum at Mohs 9, second only to diamond.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eCarat Weight: 5.39 Carats\u003c\/li\u003e\n\u003cli\u003eGem Type: Natural Blue Sapphire\u003c\/li\u003e\n\u003cli\u003eVariety: Sapphire\u003c\/li\u003e\n\u003cli\u003eShape: Round\u003c\/li\u003e\n\u003cli\u003eCut Style: Mixed Cut (Modified Brilliant crown, Step Cut pavilion)\u003c\/li\u003e\n\u003cli\u003eDimensions: 10.19 x 10.43 x 6.68 mm\u003c\/li\u003e\n\u003cli\u003eOrigin: Ceylon (Sri Lanka) — GIA confirmed\u003c\/li\u003e\n\u003cli\u003eTreatment: Unheated — GIA confirmed\u003c\/li\u003e\n\u003cli\u003eColor: Blue\u003c\/li\u003e\n\u003cli\u003eClarity: Eye-clean — no visible inclusions under normal viewing\u003c\/li\u003e\n\u003cli\u003eHardness: 9 on the Mohs scale\u003c\/li\u003e\n\u003cli\u003eCertification: GIA Report #5231646038\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThis 5.39 ct unheated Ceylon blue sapphire has been hand-selected as an exceptional specimen — the intersection of large size, natural treatment status, and independent documentation is the combination that defines the finest collector-grade sapphires.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eOne of a Kind\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\n\u003cp\u003eThis is a single natural gemstone, not a manufactured or lab-created replica — no two sapphires form with identical color, clarity, and internal character. Once this stone sells, it's gone; there is no duplicate. What you see documented on the GIA report is the exact, individual stone you receive.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eCare\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\n\u003cp\u003eSapphire is exceptionally durable (Mohs 9), but a few habits keep it looking its best. Clean with warm water, mild soap, and a soft brush; avoid ultrasonic or steam cleaners if the stone is set alongside softer or treatment-sensitive materials. Store separately from other jewelry to prevent surface scratches to softer pieces, and remove the stone before swimming, exercising, or household chemical exposure. As an unheated stone, no thermal treatment stabilizes the color — normal wear is fine, but avoid sudden extreme temperature changes.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhy Customers Love This Gemstone\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGIA-Confirmed Everything:\u003c\/strong\u003e Size, origin, and treatment — all independently documented (Report #5231646038).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExceptional Size for This Variety:\u003c\/strong\u003e 5+ carat unheated Ceylon sapphire is a rare offering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVivid Blue:\u003c\/strong\u003e Intense, even saturation across the full face of the stone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrusted Source:\u003c\/strong\u003e Direct from Ceylon, GIA-confirmed, treatment disclosed honestly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eOwning this 5.39 ct unheated GIA Ceylon blue sapphire means acquiring a stone that is exceptional across every criterion that defines sapphire rarity.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003ePerfect Uses for this 5.39 ct Blue Sapphire\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eInvestment-grade gemstone collection\u003c\/li\u003e\n\u003cli\u003eStatement pendant center stone\u003c\/li\u003e\n\u003cli\u003eCollectors of unheated Ceylon sapphires with GIA documentation\u003c\/li\u003e\n\u003cli\u003eHeirloom-quality custom commission\u003c\/li\u003e\n\u003cli\u003eMuseum-quality private collection piece\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Crescent Gems","offers":[{"title":"Default Title","offer_id":42665947136067,"sku":"CG8262","price":34496.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8982\/8931\/files\/image-2.jpg?v=1785416885","url":"https:\/\/crescentgems.com\/products\/5-39-ct-round-ceylon-blue-sapphire-unheated-gia","provider":"Crescent Gems","version":"1.0","type":"link"}