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Extreamly Rarest Ct Natural Blue Grandidierite 1.90ct Madagascar Mined
- 存貨單位
- 尺寸（毫米）
- 10.700 x 7.120 x 4.030mm
- 重量 (cts)
- 1.900
- Treatment
- No Treatment
- 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）
- 10.700 x 7.120 x 4.030 mm
- 重量 (cts)
- 1.900
- Treatment
- No Treatment
- 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
| 運輸商 | 運送至：國家 | 運送到世界其他地區 |
|---|---|---|
| Standard Shipping - Tracked | $15.00 / ：幾天天 | $15.00 / ：幾天天 |
|
：國家
Standard Shipping - Tracked訂單折扣為$15.00 2或更多商品
世界其他地區
Standard Shipping - Tracked訂單折扣為$15.00 2或更多商品
|
||
| DHL | $30.00 / ：幾天天 | $30.00 / ：幾天天 |
|
：國家
DHL訂單折扣為$30.00 2或更多商品
世界其他地區
DHL訂單折扣為$30.00 2或更多商品
|
||
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積極的Beautiful Amethyst!
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消極的
Cheated me I haven't received the stone its been almost a month now inspite of the delivery had to be in the same city.
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積極的
A bit greenish but OK.
