GIA report online : 5222307656 Shape.....................Octagonal Cutting style ...............Modified brilliant cut Color..................... Violet Species............... Natural corundum Variety.................Natural Sapphire Geographic origin....... Sri lanka Treatment : Heated Weight : 3.57 carats Measurements : 7.42 x 7.40 x 6.94 mm Comments : None The stone was selected by Tal Naaman ,Gem Hunter and sent to the GIA Lab in New York Country of Origin is an opinion offered by the seller of this item; this opinion is not substantiated by an official opinion of the Laboratory Insured international shipping with Track & Trace