سعر فوب
أحصل على آخر سعر600 ~ 700 / Gram ( Negotiable )
|100 Gram Minimum Order
بلد:
Tanzania
نموذج رقم:
Tanzanite Stone
سعر فوب:
600 ~ 700 / Gram ( Negotiable ) أحصل على آخر سعر
الموقع:
TANZANITE
سعر الحد الأدنى للطلب:
600 per Gram
الحد الأدني للطلب:
100 Gram
تفاصيل التغليف:
METAL BOX
موعد التسليم:
10
القدرة على التوريد:
10000 Gram per Month
نوع الدفع:
T/T, Western Union, Money Gram, PayPal
مجموعة المنتج :
الشخص الذي يمكن الاتصال به Mr. Mohammed
MBEZI BEACH, DAR ES SALAAM, KINONDONI
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 | |
|---|---|
| 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.
| بلد: | Tanzania |
| نموذج رقم: | Tanzanite Stone |
| سعر فوب: | 600 ~ 700 / Gram ( Negotiable ) أحصل على آخر سعر |
| الموقع: | TANZANITE |
| سعر الحد الأدنى للطلب: | 600 per Gram |
| الحد الأدني للطلب: | 100 Gram |
| تفاصيل التغليف: | METAL BOX |
| موعد التسليم: | 10 |
| القدرة على التوريد: | 10000 Gram per Month |
| نوع الدفع: | T/T, Western Union, Money Gram, PayPal |
| مجموعة المنتج : | TANZANITE |
