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4.75 Ct Incredible Natural Grandidierite Gemstone SKU A19
- 存货单位
- 尺寸（毫米）
- 14.570 x 10.520 x 5.530mm
- 重量 (cts)
- 4.750
- Treatment
- No Treatment
- 颜色
-
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
- 存货单位
- 尺寸（毫米）
- 14.570 x 10.520 x 5.530 mm
- 重量 (cts)
- 4.750
- Treatment
- No Treatment
- 颜色
-
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
| 运输商 | 运送至：国家 | 运送到世界其他地区 |
|---|---|---|
| Standard Shipping - Tracked | $10.00 / ：几天天 | $13.00 / ：几天天 |
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：国家
Standard Shipping - Tracked折扣至$15.00 ，适用于包含3或更多商品的订单
世界其他地区
Standard Shipping - Tracked折扣至$25.00 ，适用于包含2或更多商品的订单
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| DHL | $35.00 / ：几天天 | $35.00 / ：几天天 |
|
：国家
DHL折扣至$30.00 ，适用于包含2或更多商品的订单
世界其他地区
DHL折扣至$30.00 ，适用于包含2或更多商品的订单
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积极的Very good color. Promptly shipped. Arrived with no documentation.
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积极的
An utterly angelic and charming sparkler, and incredibly clean. It arrived quickly too. Thank you so much
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积极的
Even lovelier in real life. A real beauty. Thanks.
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积极的
Despite the beveled pavilion, the stone shines due to its excellent cut.
审计
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描述准确
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图片准确
Comments
The Verified Seller has provided accurate and complete information for this item including weight, dimensions, and treatment.
