1 pcs 紫罗兰色, 蓝色 坦桑石 - 3.63 ct
编号 82886069
1 pcs GIA -(蓝紫色) 坦桑石 - 6.50 ct
编号 82886069
1 pcs GIA -(蓝紫色) 坦桑石 - 6.50 ct
November 03, 2023
Gia Color Stone Report# 3475958787
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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.