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Incredible Color 9.40 Ct Incredible Natural Grandidierite Gemstone
- SKU
- Dimenzije (mm)
- 16.930 x 11.000 x 6.800mm
- Težina (cts)
- 9.400
- Treatment
- No Treatment
- Tip
- Faceted
- 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)
- 16.930 x 11.000 x 6.800 mm
- Težina (cts)
- 9.400
- Treatment
- No Treatment
- Tip
- Faceted
- 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 |
|---|---|---|
| Standard Shipping - Tracked | $10.00 / 15 | $13.00 / 21 |
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Thailand
Standard Shipping - Tracked je snižen na $15.00 na narudžbe s 3 ili više artikala
Ostatak svijeta
Standard Shipping - Tracked je snižen na $25.00 na narudžbe s 2 ili više artikala
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| DHL | $35.00 / 10 | $35.00 / 10 |
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Thailand
DHL je snižen na $30.00 na narudžbe s 2 ili više artikala
Ostatak svijeta
DHL je snižen na $30.00 na narudžbe s 2 ili više artikala
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PozitivanThe Gem is quite pale, but beautiful.
-
Pozitivan
Thanks for the prompt shipping, received in a week's time from payment via Registered Mail
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