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Super quality 3.15 Carats Natural Grandidirite Nice Cut Gemstone
- 存貨單位
- 尺寸（毫米）
- 9.500 x 11.300 x 4.700mm
- 重量 (cts)
- 3.150
- 類型
- Faceted
- Shape
- Fancy, Pear
- 顏色
-
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
- 存貨單位
- 尺寸（毫米）
- 9.500 x 11.300 x 4.700 mm
- 重量 (cts)
- 3.150
- 類型
- Faceted
- Shape
- Fancy, Pear
- 顏色
-
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
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| Standard Shipping - Tracked | $15.00 / ：幾天天 | $15.00 / ：幾天天 |
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| FedEx | $30.00 / ：幾天天 | $30.00 / ：幾天天 |
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：國家
FedEx訂單折扣為$30.00 3或更多商品
世界其他地區
FedEx訂單折扣為$30.00 3或更多商品
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積極的Paid and shipped - no feedback left after 100 days
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積極的
Paid and shipped - no feedback left after 100 days
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積極的
Paid and shipped - no feedback left after 100 days
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積極的
Paid and shipped - no feedback left after 100 days
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