{"product_id":"3-5ct-purple-blue-colour-change-corundum-alexandrite-oval-cut-8-10-mm-gemdrop®-verified","title":"~3.5ct Purple–Red-Blue Colour Change Corundum Alexandrite | Oval Cut | 8 × 10 mm | Gemdrop® Verified","description":"\u003cp\u003e\u003cspan\u003eExperience the striking beauty of this \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e~3.5 ct (8 × 10 mm) Oval Cut lab-grown Colour Change Corundum Alexandrite\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, showing a fascinating shift between \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003epurple, red, and blue tones\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e under different lighting conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePrecision cut for excellent brilliance, this gem combines vivid color, strong visual presence, and one of the most captivating optical effects available in laboratory-grown corundum.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis gem belongs to the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ecorundum mineral family (Al₂O₃)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, the same mineral species as ruby and sapphire. Although it displays an alexandrite-like color change, it is \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003enot chrysoberyl alexandrite\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. At Gemdrop®, we clearly distinguish the underlying gem material from its optical appearance so you know exactly what you are buying.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eEvery Gemdrop® gem is individually assessed and recorded, providing transparency and confidence in exactly what you are purchasing.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eREAL CORUNDUM. CREATED THROUGH SCIENCE.\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThis gem was grown using the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eCzochralski crystal growth process\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, producing a high-quality single crystal with excellent clarity, color consistency, and optical performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThrough carefully controlled chemistry, trace elements within the crystal create a dramatic \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003epurple–red–blue color change\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, giving the gem a unique and lively appearance that changes with the lighting environment.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe result is genuine laboratory-grown \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ecorundum\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e — not glass, not cubic zirconia, and not chrysoberyl — with the physical, chemical, and optical properties expected of synthetic sapphire.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003ePURPLE–RED–BLUE COLOUR CHANGE\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eOne of the most exciting features of this gem is its unusual color change.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDepending on the light source, it may show:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePurple\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e tones\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eReddish \/ red-violet\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e tones\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eBlue\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e tones\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eThis shifting appearance gives the gem exceptional character and makes it especially attractive for collectors, gem lovers, and jewelry designers seeking something visually distinctive.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eBecause color-change gems respond strongly to the spectral character of the light around them, the exact balance of purple, red, and blue may vary depending on whether the gem is viewed in daylight, indoor lighting, or mixed lighting.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eELEGANT OVAL CUT\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eOval Cut\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is a timeless and versatile shape that offers excellent brilliance and a graceful, elongated appearance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt showcases the gem’s color change beautifully while providing a substantial face-up look, making it an outstanding choice for:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eRings\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePendants\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEarrings\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBespoke jewelry\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eGem collections\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eAt \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e8 × 10 mm\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e and approximately \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e3.5 ct\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, this gem has impressive visual presence and is well suited as a center stone.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eDURABLE AND JEWELRY-FRIENDLY\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eWith a Mohs hardness of \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e9\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, corundum is one of the most durable gem materials used in jewelry.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIts combination of hardness, brilliance, and color makes lab-grown corundum an excellent choice for jewelry intended for regular wear.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eGEMDROP® VERIFIED\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eEvery Gemdrop® Verified gem is individually assessed and permanently recorded within the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eGemdrop Verification Database\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eEach record includes key gemological information such as identity, origin, growth method, dimensions, crystal system, and other relevant physical properties, providing long-term transparency and confidence in your purchase.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eSpecifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eGem Type:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Colour-Change Corundum Alexandrite \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMineral:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Corundum \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eChemical Formula:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Al₂O₃ \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCrystal System:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Trigonal \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eOrigin:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Lab-Grown \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eGrowth Method:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Czochralski \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eColour:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Purple–Red–Blue (Colour Change) \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eShape:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Oval \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCut Style:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Modified Brilliant \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eDimensions:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 8 × 10 mm \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eApproximate Weight:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e ~3.5 ct \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eHardness:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 9 (Mohs) \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eVerification:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Gemdrop® Verified\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eReal corundum. Remarkable color change. Created through science.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eScientifically assessed. Transparently documented. Ready for your next jewelry creation.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"Gemdrop","offers":[{"title":"Default Title","offer_id":58822708887926,"sku":null,"price":46.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1001\/5155\/8518\/files\/3CFE052A-B8B9-4283-ACD0-3282FEAF8950.jpg?v=1790373930","url":"https:\/\/gemdrop.io\/products\/3-5ct-purple-blue-colour-change-corundum-alexandrite-oval-cut-8-10-mm-gemdrop%c2%ae-verified","provider":"Gemdrop","version":"1.0","type":"link"}