离岸价格
获取最新报价600 ~ 700 / Gram ( Negotiable )
|100 Gram Minimum Order
Tanzanite has a vitreous luster with a relatively low hardness of 6.5 on the Mohs scale. As a result of its lower hardness, tanzanite jewellery should be stored and handled with care to avoid scratching.
Fiche technique | |
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Chemical composition |
Calcium aluminium silicate with hydroxyl |
Crystalline system |
Orthorhombic |
Cleavage |
Moderately easy to easy |
Refractive index |
1,****1,**0 |
Birefringence |
0,****0.**3 |
Specific gravity |
2.***2.*0 |
Anisotropic |
Tanzanite is anisotropic; when untreated it displays a strong trichroism of blue, yellow, and pink while heat-treated stones display strong dichroism of blue and violet. |
Gemmologists can use many tools to identify tanzanite. Tanzanite displays strong pleochroism that can often be seen with the unaided eye however, a small portable instrument called a dichroscope can be used to see tanzanites diagnostic pleochroic colours. Tanzanite does not have any diagnostic inclusions but magnification can sometimes reveal internal fissures. Due to its low hardness, tanzanite in jewellery may show scratches and chips due to wear.
Rough tanzanite is often found as crystal fragments but can also present as well-shaped orthorhombic prisms with striated faces. Transparent material is facetted and more included translucent material can be fashioned as cabochons.
国家: | Tanzania |
型号: | Tanzanite Stone |
离岸价格: | 600 ~ 700 / Gram ( Negotiable ) 获取最新报价 |
位置: | TANZANITE |
最小订单价格: | 600 per Gram |
最小订单: | 100 Gram |
包装细节: | METAL BOX |
交货时间: | 10 |
供应能力: | 10000 Gram per Month |
付款方式: | T/T, Western Union, Money Gram, PayPal |
產品組 : | TANZANITE |