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





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天然坦桑石,1颗,10.79 克拉,鲜艳的紫蓝色,矩形垫形,混合切工,透明,通常经过加热处理且无证据表明有处理,ALGT 报告编号 62006621.
卖家的描述
ALGT COLORED STONE IDENTIFICATION REPORT
IDENTIFICATION
Species ......................................................................................................... Natural Zoisite
Variety ..................................................................................................................... Tanzanite
DESCRIPTION
Shape & Cutting Style ....................................... Rectangular Cushion, Mixed Cut
Measurements .................................................................... 14.82 x 10.94 x 7.75 mm
Carat Weight ................................................................................................... 10.79 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
62006621
ALGT COLORED STONE IDENTIFICATION REPORT
IDENTIFICATION
Species ......................................................................................................... Natural Zoisite
Variety ..................................................................................................................... Tanzanite
DESCRIPTION
Shape & Cutting Style ....................................... Rectangular Cushion, Mixed Cut
Measurements .................................................................... 14.82 x 10.94 x 7.75 mm
Carat Weight ................................................................................................... 10.79 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
62006621
详细资料
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Catawiki始终致力于为您提供最佳的购买体验。我们的专家会根据我们的提交指南来虚拟地审查和选择每一件物品。虽然我们努力提供每一件珠宝的详细描述和照片,但仍可能出现差异或不准确之处。 您有责任在下订单之前查看有关物品的所有信息,包括状况和描述。卖家对所提供的信息、图片和描述承担责任,包括所提供珠宝的质量、数量和性质。照片中看不出来但描述中包含的小瑕疵并不属于不合格。 实验报告并不对其中描述的文章作出保证、估价或评估。实验报告仅包含使用该特定实验室在检查时使用的技术和设备对文章进行评分、测试、检查和分析后所描述的特征。对文章进行的任何其他检查的结果可能会因检查时间、方式、检查者以及检查的评分标准而有所不同。 此外,技术和设备的任何变化和改进可能使审查员能够检测到以前无法检测到的改变物品特性的工艺等,但这并不意味着物品本身就不符合其描述。

