Incredible Color 4.85 Ct Incredible Natural Grandidierite Gemstone
- 存貨單位
- 尺寸(毫米)
- 12.98 x 11 x 4.6mm
- 重量 (cts)
- 4.85
- Treatment
- No Treatment
- Type
- Faceted
- 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
| 提供者 | 目的地 | 成本 |
|---|---|---|
| Standard Shipping - Tracked 默認 |
世界其他地區
:幾天天
|
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| Standard Shipping - Tracked 默認 |
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|
| DHL |
泰國
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- 存貨單位
- 尺寸(毫米)
- 12.98 x 11 x 4.6 mm
- 重量 (cts)
- 4.85
- Treatment
- No Treatment
- Type
- Faceted
- 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
| 提供者 | 目的地 | 成本 |
|---|---|---|
| Standard Shipping - Tracked 默認 |
世界其他地區
:幾天天
|
第一項
每增加一件
運費上限為
|
| DHL |
世界其他地區
:幾天天
|
第一項
每增加一件
運費上限為
|
| Standard Shipping - Tracked 默認 |
泰國
:幾天天
|
第一項
每增加一件
運費上限為
|
| DHL |
泰國
:幾天天
|
第一項
每增加一件
運費上限為
|
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積極的Exactly as pictured. Well cut, packaged and timely postage. Thank you would purchase again from this seller.
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消極的Seller unreliable: claimed shipping issues without proof, pushed expensive method, then shipped anyway. I was charged an extra ~$40 without approval or refund of the original shipping fee.
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積極的Lovely gems. Just as pictured. Thank you.
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積極的Absolutely perfect gem. Beautiful color. Thank you.