{"product_id":"1-65-ct-oval-ruby-unheated-madagascar-gia","title":"1.65 ct Natural Unheated Ruby – Oval Cut | GIA Certified | Madagascar","description":"\u003cp\u003eA natural 1.65 ct oval ruby, unheated: GIA Ruby Origin Report #2245032085 records \u003cem\u003eNo Indications of Heating\u003c\/em\u003e. Ruby is natural corundum colored by chromium — the same mineral species as sapphire, but with enough chromium that the color enters the red range rather than remaining pink. Heat treatment is standard practice across the ruby trade, so an unheated stone above a carat with GIA documentation is an uncommon combination. The report records weight, dimensions, color and cutting style, and gives Madagascar as its geographic origin opinion.\u003c\/p\u003e\n\n\u003cdiv style=\"border: 2px solid #5b2c6f; border-radius: 10px; padding: 20px 24px; margin: 28px 0; background-color: #f9f5fc;\"\u003e\n\u003ch2 style=\"margin-top: 0; margin-bottom: 12px; color: #4a235a;\"\u003eExpert Opinion\u003c\/h2\u003e\n\u003cp style=\"font-weight: 600; margin-bottom: 6px;\"\u003e\u003ca href=\"\/en-jp\/pages\/ahmed-shareek-about-the-owner\" style=\"color: #4a235a; text-decoration: underline;\"\u003eAhmed Shareek\u003c\/a\u003e's Assessment\u003c\/p\u003e\n\u003cp style=\"font-style: italic; margin-bottom: 0;\"\u003e\"This is one of the more honest ruby purchases you can make — a 1.65 carat oval, GIA-documented, with no indications of heating on the report. Reaching for the furnace is the usual route in this trade, so a stone that comes back from the lab without that finding is one I am glad to have in the case.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eRarity Analysis\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003eSeveral factors compound to make this specific stone unusual, not just desirable:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnheated Status:\u003c\/strong\u003e Heat treatment to lift color and apparent clarity is routine across the ruby trade, which is why an unheated stone is documented rather than simply asserted. Unheated is not the same as untreated: GIA's finding here is about heating specifically.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarat Weight:\u003c\/strong\u003e An unheated stone over a carat with a GIA report is not a combination we see often in our own buying — that is our assessment from what passes through us, not a published market figure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGIA Documentation:\u003c\/strong\u003e A GIA report recording \"No Indications of Heating\" is what separates a documented unheated stone from an undocumented claim. The finding is the laboratory's, not the seller's.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMadagascar Origin:\u003c\/strong\u003e Madagascar is a significant modern ruby source. GIA gives Madagascar as its geographic origin opinion for this stone, based on a collection of observations and analytical data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEye-Clean Clarity:\u003c\/strong\u003e No inclusions visible to the unaided eye — our own assessment, not a GIA grade, since GIA colored-stone reports carry no clarity grade.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eBuying Guidance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003eA few things worth checking before buying any unheated, GIA-documented ruby like this one:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMatch the report to the stone:\u003c\/strong\u003e Confirm the GIA report number, measurements, and weight listed on the report match the physical stone you receive.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnderstand what \"unheated\" means:\u003c\/strong\u003e GIA's \"No Indications of Heating\" is a laboratory finding about heating, based on internal features. It is not a statement that no other treatment was applied, and it is not a judgement of color quality — evaluate the stone's color and clarity for yourself alongside the report.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAsk about filling as well as heating:\u003c\/strong\u003e lead-glass filling is a separate treatment from heat and is widespread enough in the ruby trade to be worth asking about directly — a report that addresses heating does not by itself address filling. GIA Report #2245032085 records no filling for this stone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChoose a protective setting:\u003c\/strong\u003e An unheated, documented stone is worth protecting — prong or bezel settings that shield the girdle and pavilion from daily impact are a sensible choice for ring use. Corundum resists scratching very well, but like any faceted stone it can chip on a hard knock.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpect a premium over heated material:\u003c\/strong\u003e Unheated ruby with GIA documentation typically carries a higher price per carat than comparable heated material. Ask what the report actually says, and check that the premium is supported by it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuy from a seller who discloses treatment plainly:\u003c\/strong\u003e Treatment status should be stated clearly and match the lab report — be cautious of listings that are vague about heating.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eLearn More About This Gemstone\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003eRuby and sapphire are the same mineral species, corundum, so the guides below apply to both.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-jp\/blogs\/information-pages-complete-guide\/ruby-buyers-guide\"\u003eRuby — The Complete Buyer's Guide to the World's Most Valuable Colored Gemstone\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-jp\/blogs\/information-pages-complete-guide\/spinel-buyers-guide\"\u003eSpinel — The Collector's Guide to the World's Most Undervalued Gemstone\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-jp\/blogs\/information-pages-complete-guide\/what-is-a-gia-sapphire-report-and-how-do-you-read-one\"\u003eWhat Is a GIA Sapphire Report and How Do You Read One?\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-jp\/blogs\/information-pages-complete-guide\/oval-sapphire-guide\"\u003eOval Sapphire — The Complete Guide to the Most Popular Sapphire Cut\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-jp\/blogs\/information-pages-complete-guide\/madagascar-sapphire-guide\"\u003eMadagascar Sapphire — The Modern Origin That Rivals Ceylon\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv style=\"border: 2px solid #5b2c6f; border-radius: 10px; padding: 20px 24px; margin: 28px 0; background-color: #f9f5fc;\"\u003e\n\u003ch2 style=\"margin-top: 0; margin-bottom: 14px; color: #4a235a;\"\u003eGemstone Data — At a Glance\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003eItem #\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eCG8456\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003eCarat Weight\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e1.65 Carats\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003eSpecies\/Variety\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eNatural Ruby (Corundum)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003eShape\/Cut\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eOval — brilliant-cut crown, step-cut pavilion (a mixed cut)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e7.77 x 5.98 x 4.39 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003eColor\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eRed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003ePhenomenon\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003eTreatment\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eNo indications of heating (GIA Report #2245032085)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003eOrigin\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eMadagascar — GIA geographic origin opinion, per the report's printed disclaimer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003eClarity\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eEye-clean — no visible inclusions under normal viewing; our own assessment; GIA colored-stone reports carry no clarity grade\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003eTransparency\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eTransparent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600; width: 42%;\"\u003eHardness\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e9 on the Mohs scale — scratch resistance; a corundum species constant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; font-weight: 600; width: 42%;\"\u003eCertification\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px;\"\u003eGIA Ruby Origin Report #2245032085\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhy Choose this 1.65 ct Unheated Oval Ruby?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003eThe GIA report is what separates a documented unheated ruby from an unsupported claim. Ruby sits in a category where identity and treatment both need checking: red spinel and pink-to-red sapphire have long been confused with ruby, and heating is routine enough that its absence has to be shown rather than asserted. Report #2245032085 identifies the material as natural corundum, natural ruby, at 1.65 ct and 7.77 x 5.98 x 4.39 mm, color Red, with No Indications of Heating under Additional Results, and gives Madagascar as GIA's geographic origin opinion.\u003c\/p\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eKey Benefits of this Natural Unheated Ruby\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGIA-Documented Ruby\u003c\/strong\u003e\u003cbr\u003eIndependent identification of species and variety, with weight, dimensions and cutting style recorded, and Madagascar given as GIA's origin opinion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnheated\u003c\/strong\u003e\u003cbr\u003eNo Indications of Heating, per GIA Report #2245032085 — a finding about heating specifically, not a statement that no other treatment was applied.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMadagascar Origin\u003c\/strong\u003e\u003cbr\u003eA significant modern ruby source, and GIA's geographic origin opinion for this stone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOval Mixed Cut\u003c\/strong\u003e\u003cbr\u003eA brilliant-cut crown over a step-cut pavilion, as recorded on the report — an outline that sets easily in rings and pendants.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHard-Wearing\u003c\/strong\u003e\u003cbr\u003eCorundum is 9 on the Mohs scale, which measures scratch resistance. GIA's report lists corundum's toughness as excellent — that is the property that matters for a knock.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eItem #: CG8456\u003c\/li\u003e\n\u003cli\u003eCarat Weight: 1.65 Carats\u003c\/li\u003e\n\u003cli\u003eGem Type: Natural Ruby (Corundum)\u003c\/li\u003e\n\u003cli\u003eCut: Oval — brilliant-cut crown, step-cut pavilion (a mixed cut)\u003c\/li\u003e\n\u003cli\u003eDimensions: 7.77 x 5.98 x 4.39mm\u003c\/li\u003e\n\u003cli\u003eOrigin: Madagascar — GIA geographic origin opinion\u003c\/li\u003e\n\u003cli\u003eTreatment: No indications of heating (GIA Report #2245032085)\u003c\/li\u003e\n\u003cli\u003eColor: Red\u003c\/li\u003e\n\u003cli\u003eClarity: Eye-clean — no visible inclusions under normal viewing — our own assessment, not a GIA grade\u003c\/li\u003e\n\u003cli\u003eTransparency: Transparent\u003c\/li\u003e\n\u003cli\u003eHardness: 9 on the Mohs scale — scratch resistance; a corundum species constant\u003c\/li\u003e\n\u003cli\u003eCertification: GIA Ruby Origin Report #2245032085\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eCare of Your Madagascar Ruby\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eClean with lukewarm water and mild soap using a soft brush\u003c\/li\u003e\n\u003cli\u003eStore separately to avoid surface contact\u003c\/li\u003e\n\u003cli\u003eRemove before heavy physical activity\u003c\/li\u003e\n\u003cli\u003eAvoid ultrasonic or steam cleaners\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eWhat's Included\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGIA Ruby Origin Report #2245032085\u003c\/li\u003e\n\u003cli\u003eGemstone packed in a gem sleeve\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003ePerfect Uses for this 1.65 ct Ruby\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eEngagement ring center stone\u003c\/li\u003e\n\u003cli\u003eStatement pendant or cocktail ring\u003c\/li\u003e\n\u003cli\u003eCollectors of GIA-documented unheated natural ruby\u003c\/li\u003e\n\u003cli\u003eJuly birthstone gift\u003c\/li\u003e\n\u003cli\u003eAnniversary or romantic milestone gift\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Crescent Gems","offers":[{"title":"Default Title","offer_id":43488589283395,"sku":"CG8456","price":1842300.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8982\/8931\/files\/8456001.jpg?v=1783089221","url":"https:\/\/crescentgems.com\/en-jp\/products\/1-65-ct-oval-ruby-unheated-madagascar-gia","provider":"Crescent Gems","version":"1.0","type":"link"}