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Extreamly Rarest Ct Natural Blue Grandidierite 0.95ct Madagascar Mined
- 存貨單位
- 尺寸（毫米）
- 7.780 x 5.810 x 3.840mm
- 重量 (cts)
- 0.950
- 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）
- 7.780 x 5.810 x 3.840 mm
- 重量 (cts)
- 0.950
- 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 Stone!
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中性的
I really don't understand this seller. He only shipped when threatened by the GRA managers I turned to. However, the stone arrived and is beautiful, albeit with some cracks not visible in the announcement. Be careful if you buy from them and be strict.
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積極的
Paid and shipped - no feedback left after 100 days
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積極的
Beautiful Amethyst!
