1 pcs 紫罗兰色, 蓝色 坦桑石 - 6.24 ct - 安特卫普宝石检测实验室（ALGT）
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坦桑石，1 颗，6.24 克拉，椭圆形混合切割，紫蓝色透明，经常加热但无治疗迹象，ALGT 实验室报告。
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卖家的描述
ALGT
IDENTIFICATION
Species ......................................................................................................... Natural Zoisite
Variety ..................................................................................................................... Tanzanite
DESCRIPTION
Shape & Cutting Style ......................................................................... Oval, Mixed Cut
Measurements ....................................................................... 13.53 x 9.99 x 6.01 mm
Carat Weight ...................................................................................................... 6.24 Carat
Color ..................................................................................................... Vivid Violetish 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
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.
Moderate amount of clarity enhancement in fissures.
Clarity enhancement has become a common practice in trade for many
gemstones. This enhancement is reversible at any time.
17 November, 2025
11830246
ALGT
IDENTIFICATION
Species ......................................................................................................... Natural Zoisite
Variety ..................................................................................................................... Tanzanite
DESCRIPTION
Shape & Cutting Style ......................................................................... Oval, Mixed Cut
Measurements ....................................................................... 13.53 x 9.99 x 6.01 mm
Carat Weight ...................................................................................................... 6.24 Carat
Color ..................................................................................................... Vivid Violetish 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
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.
Moderate amount of clarity enhancement in fissures.
Clarity enhancement has become a common practice in trade for many
gemstones. This enhancement is reversible at any time.
17 November, 2025
11830246
详细资料
Nr of stones
1
Gemstone type
坦桑石
复数宝石的总重量（克拉）
6,24
颜色
紫罗兰色, 蓝色
宝石透明度
透明的
处理
普通热处理，无特殊处理特征
鉴定证书
安特卫普宝石检测实验室（ALGT）
密封/不密封
不是
形状
椭圆形
切割方式
混合切割
