{"product_id":"4-25-ct-cats-eye-chrysoberyl-oval-cabochon-gia","title":"4.25 ct Natural Cat's Eye Chrysoberyl – Oval Cabochon | GIA Report | Sri Lanka (Ceylon)","description":"\u003cp\u003eA natural 4.25 carat Oval Cat's Eye Chrysoberyl cabochon, documented on GIA Cat's Eye Chrysoberyl Report #6247017765. The report prints Species Natural Chrysoberyl, Variety Natural Cat's-Eye, Shape Oval, Cutting Style Cabochon, Color Greenish Yellow, Transparency Transparent and, in its Phenomenon field, Displaying Chatoyancy — a band of light that glides across the dome of the cabochon as the stone is rotated. That entry records that the effect is present and makes no judgement about the band. The description of the eye further down this page is our own.\u003c\/p\u003e\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-gb\/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\"What stands out on this 4.25 ct chrysoberyl is the eye: to me it reads sharp, silver and single, and that is my own assessment rather than anything the report grades. GIA's Phenomenon field records that the stone displays chatoyancy, and that is as far as the document goes.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eRarity Analysis\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003eWhat the report records for this individual stone, and what we add in our own voice:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e GIA prints the Color field as Greenish Yellow. We put the saturation at Medium — our own assessment and not a graded value.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 4.25 carats, as printed on the report. We make no comparison with any other stone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurements:\u003c\/strong\u003e 9.63 x 7.55 x 5.41 mm, as printed. A length-to-width ratio is not on the report and we quote none.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhenomenon:\u003c\/strong\u003e the Phenomenon field reads Displaying Chatoyancy. The band moves across the dome as the stone turns; the report carries no sharpness, straightness or centring judgement, and ours is the only description of those on this page.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocumentation:\u003c\/strong\u003e GIA Cat's Eye Chrysoberyl Report #6247017765 records species, variety, weight, measurements, shape, colour, transparency, phenomenon and cutting style. The Sri Lanka (Ceylon) origin is our own sourcing record and is not covered by that report.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eOur Sourcing Record\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin.\u003c\/strong\u003e We bought this stone in Sri Lanka and we list it as Sri Lanka (Ceylon) on that basis — our own record, not a finding on the GIA report, which carries no geographic origin field.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTreatment.\u003c\/strong\u003e The report records species, variety, weight, measurements, shape, colour, transparency, phenomenon and cutting style. We sell this stone as untreated — that is our statement and not a finding on the report. If treatment history matters to you, ask us what we know and how we know it before you buy.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eBuying Guidance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003eA few practical points to weigh before purchasing this specific stone:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eView it under a single direct light source,\u003c\/strong\u003e such as a flashlight or spotlight, to see the band glide across the dome — diffuse or multi-directional lighting will mute the effect.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlan the setting around the cabochon's dome.\u003c\/strong\u003e At 9.63 x 7.55 x 5.41 mm this is a domed oval cabochon, so a bezel or a protective prong setting that leaves the dome unobstructed shows the band best — that is our own recommendation and not guidance from the report.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAsk any seller for the report number.\u003c\/strong\u003e A GIA report number can be checked at reportcheck.gia.edu, which is how you see for yourself which fields the document carries.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThis is a single stone.\u003c\/strong\u003e It cannot be reordered and we hold no second example of it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eLearn More About This Gemstone\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-gb\/blogs\/information-pages-complete-guide\/cats-eye-chrysoberyl-buyers-guide\"\u003eCat's Eye Chrysoberyl Buyer's Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-gb\/blogs\/information-pages-complete-guide\/alexandrite-buyers-guide\"\u003eAlexandrite Guide (Color-Change Chrysoberyl)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-gb\/blogs\/information-pages-complete-guide\/how-gems-are-formed-nature-s-incredible-underground-process\"\u003eHow Gemstones Are Formed\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\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 style=\"width: 100%; border-collapse: collapse; font-size: 0.95em;\"\u003e\n\u003ctbody\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;\"\u003eCG8442\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eCarat Weight\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e4.25 ct\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eSpecies (GIA report)\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eNatural Chrysoberyl\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eVariety (GIA report)\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eNatural Cat's-Eye\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eShape (GIA report)\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eOval\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eCutting Style (GIA report)\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eCabochon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eDimensions (GIA report)\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e9.63 x 7.55 x 5.41 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;\"\u003eColor (GIA report)\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eGreenish Yellow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eSaturation (our assessment)\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eMedium — our own assessment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003ePhenomenon (GIA report)\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eDisplaying Chatoyancy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eTransparency (GIA report)\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;\"\u003eTransparency to the eye\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eTranslucent — our own observation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eEye appearance (our assessment)\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eSharp, silver, single band — our own description\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eClarity\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eNot Applicable (cabochon-cut phenomenon stone)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eTreatment\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eUntreated (our statement)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee; font-weight: 600;\"\u003eOrigin (our sourcing record)\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eSri Lanka (Ceylon) — not covered by the GIA report\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px 8px; font-weight: 600;\"\u003eCertification\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px;\"\u003eGIA Cat's Eye Chrysoberyl Report #6247017765\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2\u003e\u003cstrong\u003eWhy the Cat's Eye Effect Happens\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eChatoyancy in chrysoberyl comes from microscopic needle-like inclusions lying parallel to one another inside the stone; light reflecting from them returns as a single band, and the band moves as the stone is turned. A cabochon is cut with its base across those needles so the band sits across the dome. GIA's report records that this stone displays chatoyancy. The three words we use for the band — sharp, silver, single — are our own and are not graded values.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFeatures of this Cat's Eye Chrysoberyl\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSKU: CG8442\u003c\/li\u003e\n\u003cli\u003eCarat Weight: 4.25 carats\u003c\/li\u003e\n\u003cli\u003eDimensions: 9.63 x 7.55 x 5.41 mm\u003c\/li\u003e\n\u003cli\u003eSpecies (GIA report): Natural Chrysoberyl\u003c\/li\u003e\n\u003cli\u003eVariety (GIA report): Natural Cat's-Eye\u003c\/li\u003e\n\u003cli\u003eShape (GIA report): Oval\u003c\/li\u003e\n\u003cli\u003eCutting Style (GIA report): Cabochon\u003c\/li\u003e\n\u003cli\u003eColor (GIA report): Greenish Yellow\u003c\/li\u003e\n\u003cli\u003eSaturation (our assessment): Medium — our own assessment\u003c\/li\u003e\n\u003cli\u003ePhenomenon (GIA report): Displaying Chatoyancy\u003c\/li\u003e\n\u003cli\u003eTransparency (GIA report): Transparent\u003c\/li\u003e\n\u003cli\u003eTransparency to the eye: Translucent — our own observation\u003c\/li\u003e\n\u003cli\u003eClarity: Not Applicable (cabochon-cut phenomenon stone)\u003c\/li\u003e\n\u003cli\u003eTreatment: Untreated (our statement)\u003c\/li\u003e\n\u003cli\u003eOrigin (our sourcing record): Sri Lanka (Ceylon) — not covered by this GIA report\u003c\/li\u003e\n\u003cli\u003eCertification: GIA Cat's Eye Chrysoberyl Report #6247017765\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis Oval Cat's Eye Chrysoberyl is sold with GIA Cat's Eye Chrysoberyl Report #6247017765, which prints the fields listed above. We chose it for the way the band reads to us — sharp, silver and single — and that is our own assessment.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eCare\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGIA publishes general care guidance for gemstones.\u003c\/li\u003e\n\u003cli\u003eWe prefer not to put a stone we did not set through an ultrasonic or a steam cleaner, because we cannot see how it is held once it is mounted — that is our own preference and not a warning from this report.\u003c\/li\u003e\n\u003cli\u003eWarm water, mild soap and a soft brush are what we use, and we store each stone separately so nothing rubs against it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eWhat's included\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGIA Cat's Eye Chrysoberyl Report #6247017765\u003c\/li\u003e\n\u003cli\u003eGemstone packed in a gem sleeve\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Crescent Gems","offers":[{"title":"Default Title","offer_id":43232607273027,"sku":"CG8442","price":7177.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8982\/8931\/files\/stone_CG8442_image-1.jpg?v=1780471047","url":"https:\/\/crescentgems.com\/en-gb\/products\/4-25-ct-cats-eye-chrysoberyl-oval-cabochon-gia","provider":"Crescent Gems","version":"1.0","type":"link"}