28 pcs 紫色, 藍色 坦桑石 - 5.03 ct - Antwerp Laboratory for Gemstone Testing (ALGT)

Species ......................................................................................................... Natural Zoisite
Variety ..................................................................................................................... Tanzanite
DESCRIPTION
描述
Shape & Cutting Style ..................................................................... Round, Mixed Cut
形状与切割风格 ..................................................................... 圆形，混切
Total Carat Weight .......................................................................................... 5.03 Carat
总克拉重量 .......................................................................................... 5.03 Carat
Color ............................................................................... Purplish Blue to Bluish Purple
颜色 ............................................................................... 紫蓝色至蓝紫色
Transparency .................................................................................................. Transparent
透明度 .................................................................................................. 透明

Origin ......................................................................................................................... Tanzania
Origin determination is an expert opinion based on microscopic examination, spectroscopic features and
chemical trace element analysis.
产地 ......................................................................................................................... Tanzania
产地判定基于显微观察、光谱特征和化学微量元素分析，为专家意见。

COMMENTS
备注
Total 28 stones. Average carat weight: 0.18 ct.
共计28颗。平均克拉重量：0.18 ct.
Tanzanite is commonly heated at low temperature to improve its color.
坦桑石通常在低温下进行加热以改善颜色。
There is currently no scientific method available to determine whether this
gemstone has been enhanced or not.
目前尚无科学方法可判断该宝石是否经过改良。
12 March, 2026
日期：2026年3月12日
91813685