Scintillating, top quality blue sapphire of 1.64 ct. Certified by ALGT, sealed, report number 75697138. Fine color quality stone. Species: Natural Corundum Variety: Sapphire Shape: Pear mixed cut Dimensions: 10.08 x 6.92 x 2.75 mm Carat weight: 1.64 ct Color: Deep Blue Transparency: Transparent Origin: Sri Lanka (seller's opinion) Treatments: Indication of heating The pictures are taken with a macro lens x10. The stone is of great quality (VS+) and of fine deep blue color. It is sealed. The stone being quite thin, it looks big for a 1.64 ct stone ! ALGT report number: 75697138 Perfect for a nice jewel, a collection item or an investment. If for any reason you don't like it, feel free to return it within 14 days. Sending via FEDEX or UPS Express, packed with great care.