Transparency: Transparent Shape: Heart Treatment: None (No Enhancement) Cut Grade: Excellent Total Carat Weight (TCW): 0.63 Variety/Type: Blue Colour: Greenish Blue Natural Untreated Green Blue Australian Sapphire Gemstone. 0.63 Carat with a beautiful & unique greenish blue colour. Also has a very good clarity, a clean stone with only some small natural inclusions visible when looking closely. Also has an excellent heart cut & polish to show great shine & colour, would look lovely in jewellery. Measures 5x5mm Totally untreated & unheated, very rare for natural sapphires. Please view our other listings for more fine gemstone & jewellery pieces. Our stock is stored offsite in a safe deposit vault so there may sometimes be delays in dispatch. All our products are tested by a gemmologist with the following qualifications: - Distinction grade in gemmology with the Gemmological association of Great Britain (Gem-A) - Accredited jewellery professional (AJP) with the Gemmological institute of America (GIA) - Fellow of the Gemmological association of Great Britain (FGA) We only deal in natural, earth mined gemstones & describe all our listing as accurately as possible. Photographs taken at 20x zoom with only natural daylight & no photoshop. All items are sent tracked, signed & insured in nondescript parcels. International buyers welcome, we ship to all destinations throughout the world. Fine Australian Green Blue Untreated Sapphire 0.63Ct Heart Cut Rare Loose Gem