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Incredible Color 4.95 Ct Incredible Natural Grandidierite Gemstone
- SKU
- Dimensioni (mm)
- 14.000 x 10.000 x 5.000mm
- Peso (cts)
- 4.950
- Tipo
- Faceted
- Colori
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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)
- 14.000 x 10.000 x 5.000 mm
- Peso (cts)
- 4.950
- 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 |
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| Standard Shipping - Tracked | $10.00 / : giorni giorni | $13.00 / : giorni giorni |
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| DHL | $35.00 / : giorni giorni | $35.00 / : giorni giorni |
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PositivoBeautiful stone and beautiful cut, definitely will buy from again. Shipping took 1 week international to Australia really happy with that time frame
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Positivo
Thank you for the opportunity to buy great gemstones
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Positivo
Beautiful stone, as expected, would buy again
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Positivo
Beautiful stone, a little more white in person, but I'll forgive that
