Opals
Gemstones
Jewelry
Coins
Incredible Color 6.20 Ct Incredible Natural Grandidierite Gemstone
- Artikelnummer
- Abmessungen (mm)
- 13.140 x 11.640 x 6.980mm
- Gewicht (cts)
- 6.200
- Treatment
- No Treatment
- Typ
- Faceted
- Farben
-
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
- Artikelnummer
- Abmessungen (mm)
- 13.140 x 11.640 x 6.980 mm
- Gewicht (cts)
- 6.200
- Treatment
- No Treatment
- Typ
- Faceted
- Farben
-
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
| Versandanbieter | Versand nach Thailand | Versand in den Rest der Welt |
|---|---|---|
| Standard Shipping - Tracked | $10.00 / 15 | $13.00 / 21 |
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Thailand
Standard Shipping - Tracked erhält Rabatt auf $15.00 bei Bestellungen mit 3 oder mehr Artikeln
Rest der Welt
Standard Shipping - Tracked erhält Rabatt auf $25.00 bei Bestellungen mit 2 oder mehr Artikeln
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| DHL | $35.00 / 10 | $35.00 / 10 |
|
Thailand
DHL erhält Rabatt auf $30.00 bei Bestellungen mit 2 oder mehr Artikeln
Rest der Welt
DHL erhält Rabatt auf $30.00 bei Bestellungen mit 2 oder mehr Artikeln
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PositivDespite the beveled pavilion, the stone shines due to its excellent cut.
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Positiv
The Gem is quite pale, but beautiful.
