1 pcs 紫色, 藍色 坦桑石 - 9.41 ct - Antwerp Laboratory for Gemstone Testing (ALGT)
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天然坦桑石，9.41 克拉，鮮艷的紫藍色，透明，梨形混合切工；ALGT 報告64253926指通常經過加熱且無任何處理證據。
AI輔助摘要
賣家描述
ALGT 彩色宝石鉴定报告
IDENTIFICATION
Species ......................................................................................................... Natural Zoisite
Variety ..................................................................................................................... Tanzanite
DESCRIPTION
Shape & Cutting Style ................................................... Elongated Pear, Mixed Cut
Measurements ....................................................................... 21.01 x 9.88 x 7.08 mm
Carat Weight ...................................................................................................... 9.41 Carat
Color ...................................................................................................... Vivid Purplish Blue
Transparency .................................................................................................. Transparent
ADDITIONAL GRADING CHARACTERISTICS
Color Quality Grade .......................................................................... Fine Color Quality
Origin ......................................................................................................................... Tanzania
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
64253926
ALGT 彩色宝石鉴定报告
IDENTIFICATION
Species ......................................................................................................... Natural Zoisite
Variety ..................................................................................................................... Tanzanite
DESCRIPTION
Shape & Cutting Style ................................................... Elongated Pear, Mixed Cut
Measurements ....................................................................... 21.01 x 9.88 x 7.08 mm
Carat Weight ...................................................................................................... 9.41 Carat
Color ...................................................................................................... Vivid Purplish Blue
Transparency .................................................................................................. Transparent
ADDITIONAL GRADING CHARACTERISTICS
Color Quality Grade .......................................................................... Fine Color Quality
Origin ......................................................................................................................... Tanzania
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
64253926
詳細資料
寶石數量
1
實驗室報告編號
64253926
Gemstone type
坦桑石
總克拉重量
9,41
顏色
紫色, 藍色
寶石透明度
透明
療程
經一般加熱，沒有處理過的證據
鑑定證書
Antwerp Laboratory for Gemstone Testing (ALGT)
有密封的
不是
形狀
梨形
切割方式
混合式切割
