Opals
Gemstones
Jewelry
Coins
Ver todas las fotos (:contar)
4.50 Ct Incredible Natural Grandidierite Gemstone - SKU- 4
- SKU
- Dimensiones (mm)
- 12.000 x 9.730 x 5.750mm
- Peso (cts)
- 4.500
- Colores
-
Grandidierite was first discovered in 1902 in Madagascar by Alfred Lacroix, a French mineralogist. Lacroix named the mineral in honor of French explorer and naturalist Alfred Grandidier (1836–1912), the first authority on the natural history of Madagascar.
Since its initial discovery, samples of Grandidierite have been found in only a few locations around the world, including Malawi, Namibia and Sri Lanka. But the few gem quality specimens have come mainly from Madagascar.
Gem-quality Grandidierite is extremely rare, and it often appears on the list of the 10 rarest varieties in the world, along with gems like jeremejevite, painite, benitoite and taafeite.
Gemologically, Grandidierite is a magnesium aluminum borosilicate. It has a hardness of 7 to 7.5 on the Mohs scale, similar to garnet; a density of 2.85 to 3.00, in the approximate range of tourmaline; and a refractive index of 1.590-1.623.
Name: GRANDIDIERITE GEMSTONE
Place of Origin: MADAGASCAR
TREATMENT: NATURAL
- SKU
- Dimensiones (mm)
- 12.000 x 9.730 x 5.750 mm
- Peso (cts)
- 4.500
- Colores
-
Grandidierite was first discovered in 1902 in Madagascar by Alfred Lacroix, a French mineralogist. Lacroix named the mineral in honor of French explorer and naturalist Alfred Grandidier (1836–1912), the first authority on the natural history of Madagascar.
Since its initial discovery, samples of Grandidierite have been found in only a few locations around the world, including Malawi, Namibia and Sri Lanka. But the few gem quality specimens have come mainly from Madagascar.
Gem-quality Grandidierite is extremely rare, and it often appears on the list of the 10 rarest varieties in the world, along with gems like jeremejevite, painite, benitoite and taafeite.
Gemologically, Grandidierite is a magnesium aluminum borosilicate. It has a hardness of 7 to 7.5 on the Mohs scale, similar to garnet; a density of 2.85 to 3.00, in the approximate range of tourmaline; and a refractive index of 1.590-1.623.
Name: GRANDIDIERITE GEMSTONE
Place of Origin: MADAGASCAR
TREATMENT: NATURAL
| Proveedor de envío | Envío a: país | Envíos al resto del mundo |
|---|---|---|
| Standard Shipping - Tracked | $10.00 / :días días | $15.00 / :días días |
|
:país
:proveedor tiene un descuento de $16.00 en pedidos con 2 o más artículos
Resto del mundo
:proveedor tiene un descuento de $16.00 en pedidos con 2 o más artículos
|
||
| FedEx | $28.00 / :días días | $28.00 / :días días |
|
:país
:proveedor tiene un descuento de $28.00 en pedidos con 2 o más artículos
Resto del mundo
:proveedor tiene un descuento de $28.00 en pedidos con 2 o más artículos
|
||
-
PositivoWow, amazing gem, well-cut, as described, proper weight. Thank you!
-
Positivo
Absolutely fantastic, such a vivid pinkish red stone I have not seen.
