29 pcs 蓝色, 紫色坦桑石 - 5.01 ct - 安特卫普宝石检测实验室（ALGT）

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ALGT COLORED STONE IDENTIFICATION REPORT IDENTIFICATION Species ......................................................................................................... Natural Zoisite Variety ..................................................................................................................... Tanzanite DESCRIPTION Shape & Cutting Style ..................................................................... Round, Mixed Cut Total Carat Weight .......................................................................................... 5.01 Carat Color ............................................................................... Purplish Blue to Bluish Purple Transparency .................................................................................................. Transparent ADDITIONAL GRADING CHARACTERISTICS Origin ......................................................................................................................... Tanzania Origin determination is an expert opinion based on microscopic examination, spectroscopic features and chemical trace element analysis. COMMENTS Total 29 stones. Average carat weight: 0.17 ct. Tanzanite is commonly heated at low temperature to improve its color. There is currently no scientific method available to determine whether this gemstone has been enhanced or not. 12 March, 2026 34831023

编号 107928116

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29 pcs 蓝色, 紫色坦桑石 - 5.01 ct - 安特卫普宝石检测实验室（ALGT）

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ALGT COLORED STONE IDENTIFICATION REPORT
IDENTIFICATION
Species ......................................................................................................... Natural Zoisite
Variety ..................................................................................................................... Tanzanite
DESCRIPTION
Shape & Cutting Style ..................................................................... Round, Mixed Cut
Total Carat Weight .......................................................................................... 5.01 Carat
Color ............................................................................... Purplish Blue to Bluish Purple
Transparency .................................................................................................. Transparent
ADDITIONAL GRADING CHARACTERISTICS
Origin ......................................................................................................................... Tanzania
Origin determination is an expert opinion based on microscopic examination, spectroscopic features and
chemical trace element analysis.
COMMENTS
Total 29 stones. Average carat weight: 0.17 ct.
Tanzanite is commonly heated at low temperature to improve its color.
There is currently no scientific method available to determine whether this
gemstone has been enhanced or not.
12 March, 2026
34831023