沒有保留價 - 22 pcs 藍色, 紫色坦桑石 - 6.12 ct - Antwerp Laboratory for Gemstone Testing (ALGT)

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15 December, 2025 75212715 algt colored stone identification report identification species ......................................................................................................... natural zoisite variety ..................................................................................................................... tanzanite DESCRIPTION Shape & Cutting Style ........................................... Round, Mixed Cut Total Carat Weight .................................................................. 6.12 Carat Color ....................................................... Light to Intense Purplish Blue 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 22 stones. Average carat weight: 0.27 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.

編號 103268135

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沒有保留價 - 22 pcs 藍色, 紫色坦桑石 - 6.12 ct - Antwerp Laboratory for Gemstone Testing (ALGT)

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15 December, 2025
75212715

algt colored stone identification report
identification

species ......................................................................................................... natural zoisite
variety ..................................................................................................................... tanzanite

DESCRIPTION

Shape & Cutting Style ........................................... Round, Mixed Cut
Total Carat Weight .................................................................. 6.12 Carat
Color ....................................................... Light to Intense Purplish Blue
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 22 stones. Average carat weight: 0.27 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.