{"product_id":"1-63-ct-natural-color-change-spinel-gia-documented","title":"1.63 CT NATURAL COLOR-CHANGE SPINEL — GIA DOCUMENTED","description":"\u003cp\u003eA distinctive natural spinel for collectors and jewelry buyers, with a GIA report documenting a visible color change from violetish blue to purple under different lighting conditions.\u003c\/p\u003e\n\u003cp\u003eIn daylight or fluorescent light, the stone presents a cool violetish-blue appearance. Under incandescent lighting, it shifts toward purple, giving the gem a dynamic look that changes with its surroundings. This makes it an engaging choice for anyone who appreciates gemstones with visual character beyond a single face-up color.\u003c\/p\u003e\n\u003cp\u003eThe transparent cushion cut combines a modified brilliant-cut crown with a modified step-cut pavilion. As the stone moves, the faceting produces flashes of blue, violet, and purple while preserving the elegant outline of a cushion-shaped gem.\u003c\/p\u003e\n\u003cp\u003eGemstone Details:\u003c\/p\u003e\n\u003cp\u003e• Gemstone: Natural spinel — GIA-confirmed\u003cbr\u003e• Weight: 1.63 carats — GIA-confirmed\u003cbr\u003e• Color: Violetish blue changing to purple — GIA-confirmed\u003cbr\u003e• Phenomenon: Color change under different lighting — GIA-confirmed\u003cbr\u003e• Shape: Cushion\u003cbr\u003e• Measurements: 6.90 × 5.54 × 5.14 mm\u003cbr\u003e• Transparency: Transparent\u003cbr\u003e• Treatment: No indications of heating\u003cbr\u003e• Origin: Sri Lanka — seller-provided provenance; not GIA-confirmed\u003cbr\u003e• GIA Report Number: 2241042394\u003c\/p\u003e\n\u003cp\u003eFor collectors, the appeal lies in the combination of natural spinel, transparent material, a documented color-change phenomenon, and a versatile cushion shape. With a Mohs hardness of approximately 8, spinel is also well suited to a carefully designed ring or pendant, while remaining attractive as a loose gemstone for a collection.\u003c\/p\u003e\n\u003cp\u003ePrice: $1,750\u003c\/p\u003e\n\u003cp\u003eThe GIA report is included.\u003c\/p\u003e\n\u003cp\u003eLearn more about natural color-change spinel here:\u003cbr\u003ehttps:\/\/www.instagram.com\/p\/Db-PO28GwoTju1WuBQJsZdgPmoBb84pYXArScg0\/?img_index=11\u0026amp;igsi=MTJmZXQ0bnI0ZW0zag==\u003c\/p\u003e\n\u003cp\u003ePlease DM me to arrange properly insured shipping. Facebook’s standard shipping option does not provide the level of insurance required for this gemstone.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":52372645445928,"sku":null,"price":1750.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/4059\/6008\/files\/B8302646-8CDC-4EC9-BD49-277703FF0EE7.jpg?v=1789184308","url":"https:\/\/shop.roguevalleygemexchange.com\/products\/1-63-ct-natural-color-change-spinel-gia-documented","provider":"Rogue Valley Gem Exchange ","version":"1.0","type":"link"}