Opals
Gemstones
Jewelry
Coins
View All Photos (6)
1.85 Carats Rarest Natural Afghanite Gemstone
- SKU
- Dimensions (mm)
- 10.000 x 8.000 x 4.000mm
- Weight (cts)
- 1.850
- Treatment
- No Treatment
- Type
- Faceted
- Colours
-
Afghanite, (Na,K)22Ca10[Si24Al24O96](SO4)6Cl6,[1] is a hydrous sodium, calcium, potassium, sulfate, chloride, carbonate alumino-silicate mineral. Afghanite is a feldspathoid of the cancrinite group and typically occurs with sodalite group minerals. It forms blue to colorless, typically massive crystals in the trigonal crystal system. The lowering of the symmetry from typical (for cancrinite group) hexagonal one is due to ordering of Si and Al.[1] It has a Mohs hardness of 5.5 to 6 and a specific gravity of 2.55 to 2.65. It has refractive index values of nω=1.523 and nε=1.529. It has one direction of perfect cleavage and exhibits conchoidal fracture.[3] It fluoresces a bright orange.
Natural Gemstone
Paypal Accepted
- SKU
- Dimensions (mm)
- 10.000 x 8.000 x 4.000 mm
- Weight (cts)
- 1.850
- Treatment
- No Treatment
- Type
- Faceted
- Colours
-
Afghanite, (Na,K)22Ca10[Si24Al24O96](SO4)6Cl6,[1] is a hydrous sodium, calcium, potassium, sulfate, chloride, carbonate alumino-silicate mineral. Afghanite is a feldspathoid of the cancrinite group and typically occurs with sodalite group minerals. It forms blue to colorless, typically massive crystals in the trigonal crystal system. The lowering of the symmetry from typical (for cancrinite group) hexagonal one is due to ordering of Si and Al.[1] It has a Mohs hardness of 5.5 to 6 and a specific gravity of 2.55 to 2.65. It has refractive index values of nω=1.523 and nε=1.529. It has one direction of perfect cleavage and exhibits conchoidal fracture.[3] It fluoresces a bright orange.
Natural Gemstone
Paypal Accepted
| Shipping provider | Shipping to Thailand | Shipping to rest of world |
|---|---|---|
| Standard Shipping - Tracked | $12.00 / 15 days | $12.00 / 15 days |
|
Thailand
Standard Shipping - Tracked is discounted to $7.00 on orders with 2 or more items
Rest of the world
Standard Shipping - Tracked is discounted to $7.00 on orders with 2 or more items
|
||
| DHL | $22.00 / 8 days | $22.00 / 10 days |
|
Thailand
DHL is discounted to $22.00 on orders with 2 or more items
Rest of the world
DHL is discounted to $22.00 on orders with 2 or more items
|
||
| Express Shipping | $22.00 / 8 days | $22.00 / 8 days |
|
Thailand
Express Shipping is discounted to $22.00 on orders with 2 or more items
Rest of the world
Express Shipping is discounted to $22.00 on orders with 2 or more items
|
||
-
Positivegood seller
-
Neutral
Stone is fine related to its price. A misunderstanding concerning the certificate.
-
Positive
Nice cut on a lovely stone, thank you very much.
-
Positive
Good seller, recomended seller
