1 pcs 紫色, 蓝色 坦桑石 - 10.79 ct - 安特卫普宝石检测实验室（ALGT）

ALGT 彩色宝石鉴定报告
IDENTIFICATION
Species ......................................................................................................... 天然透辉石
Variety ..................................................................................................................... 坦桑石
DESCRIPTION
Shape & Cutting Style ....................................... 矩方形垫型，混合切工
Measurements .................................................................... 14.82 x 10.94 x 7.75 mm
Carat Weight ................................................................................................... 10.79 克拉
Color ...................................................................................................... 鲜艳的紫蓝色
Transparency .................................................................................................. 透明
ADDITIONAL GRADING CHARACTERISTICS
Color Quality Grade .......................................................................... 优良色彩
Origin ......................................................................................................................... 坦桑尼亚
Origin determination is an expert opinion based on microscopic examination, spectroscopic features and
chemical trace element analysis.
COMMENTS
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.
Minor amount of clarity enhancement in fissures at the time of testing.
Clarity enhancement has become a common practice in trade for many
gemstones. This enhancement is reversible at any time.
07 February, 2026
62006621