Prix FOB
Obtenir le dernier prix600 ~ 700 / Gram ( Negotiable )
|100 Gram Minimum Order
Pays:
Tanzania
N ° de modèle:
Tanzanite Stone
Prix FOB:
600 ~ 700 / Gram ( Negotiable ) Obtenir le dernier prix
Localité:
TANZANITE
Prix de commande minimale:
600 per Gram
Commande minimale:
100 Gram
Packaging Detail:
METAL BOX
Heure de livraison:
10
Capacité de Fournir:
10000 Gram per Month
Payment Type:
T/T, Western Union, Money Gram, PayPal
Groupe de produits :
Personne àcontacter 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.
| Pays: | Tanzania |
| N ° de modèle: | Tanzanite Stone |
| Prix FOB: | 600 ~ 700 / Gram ( Negotiable ) Obtenir le dernier prix |
| Localité: | TANZANITE |
| Prix de commande minimale: | 600 per Gram |
| Commande minimale: | 100 Gram |
| Packaging Detail: | METAL BOX |
| Heure de livraison: | 10 |
| Capacité de Fournir: | 10000 Gram per Month |
| Payment Type: | T/T, Western Union, Money Gram, PayPal |
| Groupe de produits : | TANZANITE |
