November 03, 2023 Gia Color Stone Report# 3475958787 ==================================== Item Description: One Loose Stone Weight: 6.50 Carats Measurements: 11.81 X 9.29 X 7.29 Mm Results Species........................................................................................ Zoisite Variety................................................................................... Tanzanite Details Shape.................................................................................... Octagonal Cutting Style ........................................................................... Step Cut Transparency ................................................................. Transparent Color.................................................................................. Bluish Violet Treatment ...................................................................... Heated Country Of Origin ........................ Merlani, Northern Tanzania (Seller's Opinion) Comments: Tanzanite's are commonly Heated at low temperature to improve it's color. There is no Scientific method available to Determine the treatment type.