{"title":"Natural Cat's Eye Chrysoberyl - Chatoyancy Phenomenon Stones","description":"\u003cp\u003eNatural cat's eye chrysoberyl is a phenomenon gemstone displaying chatoyancy - a sharp single band of light that moves smoothly across the surface of a cabochon-cut stone as it rotates under light. The effect mimics the vertical slit pupil of a cat's eye in headlights. Fine cat's eye chrysoberyl is one of the rarest phenomenon gemstones in the world and has been prized for centuries, particularly in South Asia where it carries deep cultural significance. For the broader chrysoberyl family including faceted stones, see our \u003ca href=\"\/en-gb\/collections\/natural-chrysoberyl-loose-stones-sri-lanka\"\u003echrysoberyl collection\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Our Natural Cat's Eye Chrysoberyl\u003c\/h2\u003e\n\n\u003cp\u003eOur cat's eye chrysoberyls are sourced primarily from Sri Lanka, one of the world's leading sources. Every stone is \u003cstrong\u003enatural and untreated\u003c\/strong\u003e - chrysoberyl rarely requires any enhancement. We hand-select for eye sharpness, body colour, and the milk-and-honey effect that distinguishes a great cat's eye from an ordinary one. Premium pieces ship with \u003cstrong\u003eGIA reports\u003c\/strong\u003e. Select pieces are eligible for our \u003ca href=\"\/en-gb\/collections\/try-before-you-buy-loose-gemstone\"\u003eTry-On programme\u003c\/a\u003e - the chatoyancy phenomenon genuinely must be seen under direct light to be properly evaluated. For why Sri Lanka is the premier source, see our \u003ca href=\"\/en-gb\/pages\/ceylon-sapphire-origin-guide\"\u003eCeylon sapphire origin guide\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eHow to Choose a Cat's Eye Chrysoberyl\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eEye sharpness.\u003c\/strong\u003e The most prized cat's eyes show a tight, sharp, well-centred line of light that moves smoothly across the dome as the stone rotates. A fuzzy or off-centre eye significantly reduces value. \u003cstrong\u003eMilk and honey effect.\u003c\/strong\u003e Under directional light, one half of the dome appears creamy white (the milk) while the other glows golden (the honey). The stronger and more distinct this contrast, the finer the stone. \u003cstrong\u003eBody colour.\u003c\/strong\u003e The finest Ceylon cat's eyes show a vivid golden-green to honey-yellow body. Pale or brownish body colours are less prized. \u003cstrong\u003eTransparency.\u003c\/strong\u003e Translucent to semi-translucent cabochons with depth are more desirable than opaque ones.\u003c\/p\u003e\n\n\u003ch2\u003eCollector and Jyotish Significance\u003c\/h2\u003e\n\n\u003cp\u003eCat's eye chrysoberyl (Lahsuniya) is the prescribed gemstone for Ketu in Jyotish (Vedic astrology). Requirements are strict: natural chrysoberyl only, untreated, with a sharp and well-centred eye, in gold or silver setting with skin contact. See our \u003ca href=\"\/en-gb\/blogs\/information-pages-complete-guide\/buying-sapphires-for-jyotish-vedic-astrology\"\u003eJyotish gemstone guide\u003c\/a\u003e for the full specification context. For collector buyers, fine cat's eye chrysoberyl above 5 carats with a sharp eye and vivid body colour is genuinely scarce - see our \u003ca href=\"\/en-gb\/collections\/gia-certified-stones\"\u003ecollection of stones with GIA reports\u003c\/a\u003e for the broader collector context.\u003c\/p\u003e\n\n\u003cp\u003eEmail \u003ca href=\"mailto:crescentgems@gmail.com\"\u003ecrescentgems@gmail.com\u003c\/a\u003e for sourcing to specification. 14-day return. Free US shipping.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eRelated: \u003ca href=\"\/en-gb\/collections\/natural-chrysoberyl-loose-stones-sri-lanka\"\u003eFaceted chrysoberyl\u003c\/a\u003e - \u003ca href=\"\/en-gb\/collections\/alexandrite-gemstones-the-color-change-chrysoberyl\"\u003eAlexandrite\u003c\/a\u003e - \u003ca href=\"\/en-gb\/collections\/natural-star-sapphires-six-ray-asterism-unheated-ceylon\"\u003eStar sapphires\u003c\/a\u003e - \u003ca href=\"\/en-gb\/collections\/gia-certified-stones\"\u003eStones with GIA reports\u003c\/a\u003e - \u003ca href=\"\/en-gb\/collections\/tsavorite-garnet-gemstones-emerald-alternative\"\u003eTsavorite garnet\u003c\/a\u003e - \u003ca href=\"\/en-gb\/collections\/all-sapphire-gemstones\"\u003eAll sapphires\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e","products":[{"product_id":"2-36-ct-chrysoberyl-cats-eye-unheated","title":"2.36 ct Natural Cat's Eye Chrysoberyl – Oval Shape, Cabochon Cut | GIA Report","description":"\u003cp\u003eThis 2.36 carat natural chrysoberyl cat's eye is an oval cabochon. The GIA report's Phenomenon field reads \u003cstrong\u003eDisplaying Chatoyancy\u003c\/strong\u003e. Chatoyancy occurs when light reflects from oriented inclusions in a cabochon-cut stone: GIA publishes that to be chatoyant, a group of fibers or needles or other reflective inclusions must be oriented parallel to the cabochon base, and that dense clouds of minute fibrous inclusions create the cat's-eye phenomenon. On this stone that band reads as sharp and well centered — our own assessment, not a finding on the report. GIA printed the color as \u003cstrong\u003eYellow\u003c\/strong\u003e — honey yellow is our own description of the same hue.\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-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 stone is how sharp and centered the eye stays as you rotate it, and how it holds a single crisp line across the dome — that is my own judgement of this one stone, not something the report grades. I would rather you look at the video and the photographs and reach your own view of it.\"\u003c\/p\u003e\n\u003c\/div\u003e\n\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\u003eWhere we bought it:\u003c\/strong\u003e Sri Lanka (Ceylon). That is the store's own sourcing record — the GIA report for this stone does not address geographic origin, so nothing here rests on the report.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTreatment:\u003c\/strong\u003e We sell this stone as untreated — that is our statement, not a finding on the report. Chrysoberyl is generally not treated: that is CIBJO's published position on the material, not a finding about this stone.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cspan role=\"text\"\u003e\u003cstrong\u003eRarity Analysis\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003eThe attributes that make up this particular cat's eye chrysoberyl, as recorded and as we see them:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e GIA printed \u003cstrong\u003eYellow\u003c\/strong\u003e — we describe the same hue as honey yellow at medium saturation, our own description and not a graded value.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 2.36 carats, measuring 8.79 x 8.24 x 3.38 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape and cutting style:\u003c\/strong\u003e the report records \u003cstrong\u003eOval\u003c\/strong\u003e and \u003cstrong\u003eCabochon\u003c\/strong\u003e as two separate fields.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhenomenon:\u003c\/strong\u003e the report's Phenomenon field reads \u003cstrong\u003eDisplaying Chatoyancy\u003c\/strong\u003e. That is an existence finding; GIA does not grade or provide quality analysis for colored stones, so the report carries no phenomenon-quality grade.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocumentation:\u003c\/strong\u003e GIA Report #2243017776, which records species, variety, weight, measurements, shape, color, transparency, cutting style and the phenomenon field.\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 practical points to weigh before purchasing this specific stone:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLook at the band under one light source.\u003c\/strong\u003e A chatoyant band appears to move as the stone is turned, so ask for more images or video and rotate the stone yourself rather than taking anyone's description of the eye on trust — ours included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlan the setting around the cabochon's dome height.\u003c\/strong\u003e At 8.79 x 8.24 x 3.38 mm, we would set this oval cabochon in a bezel or in prongs with enough depth to seat the dome without hiding the girdle — that is our own recommendation, not guidance from the report.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfirm the GIA report matches the stone.\u003c\/strong\u003e When comparison shopping, make sure any cat's eye chrysoberyl you're considering comes with a report number you can verify against the physical stone, not just a generic lab mention.\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\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\/how-gems-are-formed-nature-s-incredible-underground-process\"\u003eHow Gemstones Are Formed\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-gb\/blogs\/information-pages-complete-guide\/art-of-pit-mining-gemstones-sri-lanka\"\u003ePit Mining Gemstones in Sri Lanka\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-gb\/blogs\/information-pages-complete-guide\/alexandrite-buyers-guide\"\u003eAlexandrite Buyer's Guide\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 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;\"\u003eCG8245\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;\"\u003e2.36 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 \/ Cutting Style (GIA report)\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eOval \/ Cabochon\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\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003e8.79 x 8.24 x 3.38 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\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eYellow (GIA report) — honey yellow, medium saturation, 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;\"\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;\"\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\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px; border-bottom: 1px solid #e5d9ee;\"\u003eSri Lanka (Ceylon) (store's own assessment; not addressed by the GIA report)\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;\"\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; font-weight: 600;\"\u003eCertification\u003c\/td\u003e\n\u003ctd style=\"padding: 6px 8px;\"\u003eGIA (Gemological Institute of America) Report #2243017776\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eCarat Weight: 2.36 Carats\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\u003eTreatment: Untreated (our statement)\u003c\/li\u003e\n\u003cli\u003eColor (GIA report): Yellow\u003c\/li\u003e\n\u003cli\u003eTransparency (GIA report): Transparent\u003c\/li\u003e\n\u003cli\u003ePhenomenon (GIA report): Displaying Chatoyancy\u003c\/li\u003e\n\u003cli\u003eCertification: GIA Report #2243017776\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e\u003cstrong\u003eCare of Chrysoberyl cats eye\u003c\/strong\u003e\u003c\/h2\u003e\n\n\u003cp\u003eGIA publishes general care guidance for gemstones. Our own practice is stricter:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eWe clean a loose stone with lukewarm water and mild soap, using a soft brush\u003c\/li\u003e\n\u003cli\u003eWe store it separately so nothing rubs against it\u003c\/li\u003e\n\u003cli\u003eWe take a set stone off before heavy physical activity\u003c\/li\u003e\n\u003cli\u003eWe prefer not to put a stone we did not set into an ultrasonic or steam cleaner, because we cannot see how it is held once it is mounted — that is our preference, not a warning from the report\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eEverything in that list is our own preference, not a warning from the report.\u003c\/p\u003e\n\n\u003ch2\u003e\u003cstrong\u003eWhat's included\u003c\/strong\u003e\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eGIA Report #2243017776\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":42774382379075,"sku":"CG8245","price":3792.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8982\/8931\/files\/Cats_Eye.jpg?v=1778308033"},{"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":9482.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8982\/8931\/files\/stone_CG8442_image-1.jpg?v=1780471047"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8982\/8931\/collections\/Cats_Eye-1779275965.jpg?v=1781260302","url":"https:\/\/crescentgems.com\/en-gb\/collections\/natural-cats-eye-chrysoberyl-chatoyancy-stones.oembed","provider":"Crescent Gems","version":"1.0","type":"link"}