沒有保留價 藍色, 紫色 坦桑石 - 1,30 ct - Antwerp Laboratory for Gemstone Testing (ALGT)

ALGT 彩色宝石鉴定报告

Identification
Species: Natural Zoisite
Variety: Tanzanite

Description
Shape & Cutting Style: 椭圆形，混合切工
Measurements: 7.84 × 5.58 × 4.29 mm
Carat Weight: 1.30 克拉
Color: 紫蓝色
Transparency: 透明

Additional Grading Characteristics
Origin: Tanzania
Origin determination is an expert opinion based on microscopic examination, spectroscopic features and chemical trace element analysis.
Origin determination 是基于显微观察、分光特征和化学痕量元素分析的专家意见。

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.
常用低温加热以改善其颜色。当前没有科学方法可以确定此宝石是否被处理过。

The photos were taken in a professional studio with extensive (natural) lighting to enhance the visibility of the color variations.
照片在专业摄影棚拍摄，使用大量（自然光）照明以增强颜色变化的可见性。
The images have not been edited in order to present the most realistic representation possible.
图片未经过编辑，以呈现最真实的表现。
Color deviations may occur depending on the display settings of your computer, monitor, or smartphone.
颜色偏差可能取决于电脑、显示器或智能手机的显示设置。

Well packed and insured registered shipping. No additional VAT for buyers within EU.
包装完善并投保的挂号运输。对欧盟买家不征收额外增值税。

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