Transparency: Transparent Shape: Round Cut Grade: Excellent Total Carat Weight (TCW): 1.66 Variety/Type: Blue Certification: IGI Country of Origin: Australia Colour: Deep Greenish Blue Certificate: IGI Fine Deep Green Blue ‘Teal’ Sapphire in IGI Blister. 1.66 Carat with an excellent round cut & excellent clarity, very clean stone. Fully certified & sealed by IGI in Antwerp. Confirmed as Australian in origin. Standard heated like nearly all sapphires on the market. No diffusion or other treatment. Some photo angles show lines across the stone, this is simply the reflection from the blister seal. 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. 1.66Ct Fine Australian Deep Green Blue Teal Sapphire Round Diamond Cut Certified