Transparency: Transparent Treatment: None (No Enhancement) Shape: Heart Total Carat Weight (TCW): 1.12 Variety/Type: Colour Change Certification: IGI Country of Origin: Australia Colour: Colour Change Rare Untreated Australian Colour Change Sapphire Gemstone. 1.12 Carat unheated sapphire with a rare colour change effect. Changing colour depending on the light its viewed in. Very rare for natural gemstones, especially Sapphires. Changes colour from a deep greenish blue in white daylight to deep yellowish green in incandescent or artificial light. Very rare & stunning to see. Fully certified & sealed by IGI confirming stone as natural, Australian, untreated & with colour change effect. Has excellent clarity, a very clean stone also has an excellent heart cut & ideal polish to show great shine & colour, would look lovely in a piece of high end jewellery. A fine, top grade, certified untreated colour change sapphire sapphire. A unique rare gem. 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. 1.12Ct Unheated Colour Change Sapphire Green Blue Igi Certified Heart Australian