Opals
Gemstones
Jewelry
Coins
Visualizza tutte le foto (11)
Incredible Color 6.10 Ct Incredible Natural Grandidierite Gemstone
- SKU
- Dimensioni (mm)
- 15.150 x 10.000 x 5.920mm
- Peso (cts)
- 6.100
- Treatment
- No Treatment
- Tipo
- Faceted
- Colori
-
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
- Dimensioni (mm)
- 15.150 x 10.000 x 5.920 mm
- Peso (cts)
- 6.100
- Treatment
- No Treatment
- Tipo
- Faceted
- Colori
-
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
| Fornitore di spedizioni | Spedizione in :paese | Spedizione nel resto del mondo |
|---|---|---|
| Standard Shipping - Tracked | $10.00 / : giorni giorni | $13.00 / : giorni giorni |
|
:Paese
Standard Shipping - Tracked è scontato a :prezzo per ordini con :quantità o più articoli
Resto del mondo
Standard Shipping - Tracked è scontato a :prezzo per ordini con :quantità o più articoli
|
||
| DHL | $35.00 / : giorni giorni | $35.00 / : giorni giorni |
|
:Paese
DHL è scontato a :prezzo per ordini con :quantità o più articoli
Resto del mondo
DHL è scontato a :prezzo per ordini con :quantità o più articoli
|
||
-
PositivoA+++ fast shipping items as described!
-
Positivo
A+++ fast shipping items as described!
-
Positivo
A+++ fast shipping items as described!
-
Positivo
A+++ fast shipping items as described!
-
Positivo
A+++ fast shipping items as described!
