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18.40 cts Grandidierite Cabochons Lot
- SKU
- Dimensions (mm)
- 10.000 x 9.000 x 5.000mm
- Weight (cts)
- 18.400
- Colours
-
Natural Grandidierite Cabochon
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.
- SKU
- Dimensions (mm)
- 10.000 x 9.000 x 5.000 mm
- Weight (cts)
- 18.400
- Colours
-
Natural Grandidierite Cabochon
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.
| Shipping provider | Shipping to Thailand | Shipping to rest of world |
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| Standard Shipping - Tracked | $20.00 / 15 days | $30.00 / 25 days |
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Thailand
Standard Shipping - Tracked is discounted to $15.00 on orders with 2 or more items
Rest of the world
Standard Shipping - Tracked is discounted to $25.00 on orders with 2 or more items
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| FedEx | $25.00 / 5 days | $45.00 / 14 days |
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Rest of the world
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PositiveI recommend this seller. Beautiful Kunzite! Thank you
