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Super quality 3.15 Carats Natural Grandidirite Nice Cut Gemstone
- SKU
- Dimenzije (mm)
- 9.500 x 11.300 x 4.700mm
- Težina (cts)
- 3.150
- Tip
- Faceted
- Shape
- Fancy, Pear
- Boje
-
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
- Dimenzije (mm)
- 9.500 x 11.300 x 4.700 mm
- Težina (cts)
- 3.150
- Tip
- Faceted
- Shape
- Fancy, Pear
- Boje
-
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
| Pružatelj usluge dostave | Dostava Thailand | Dostava u ostatak svijeta |
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| Standard Shipping - Tracked | $15.00 / 21 | $15.00 / 21 |
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| FedEx | $30.00 / 7 | $30.00 / 7 |
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Thailand
FedEx je snižen na $30.00 na narudžbe s 3 ili više artikala
Ostatak svijeta
FedEx je snižen na $30.00 na narudžbe s 3 ili više artikala
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