Transparency: Transparent Gemstone Colour: Blue Shape: Heart Gemstone Type: Sapphire Gemstone Form: Cut Cut Grade: Excellent Total Carat Weight (TCW): 2.31 Variety/Type: Blue Gemstone Shape: Heart Gemstone Creation: Natural Country of Origin: Australia Colour: Blue Natural Deep Blue Australian Sapphire Gemstone. 2.31 Carat with a beautiful deep blue colour & excellent clarity, a very clean stone. Also has an excellent heart cut & ideal polish to show great shine & colour, would look lovely in jewellery. Measures 8.5x6.8mm. Standard heated like nearly all sapphires on the market. No diffusion or other treatment. 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 Deep Blue Australian Sapphire 2.31Ct Heart Cut Rare Loose Gem 8.5x6.8mm