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Incredible Color 2..40 Ct Incredible Natural Grandidierite Gemstone
- 存货单位
- 尺寸（毫米）
- 9.930 x 8.280 x 5.380mm
- 重量 (cts)
- 2.400
- Treatment
- No Treatment
- 类型
- Faceted
- 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）
- 9.930 x 8.280 x 5.380 mm
- 重量 (cts)
- 2.400
- Treatment
- No Treatment
- 类型
- Faceted
- 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 |
|
：国家
Standard Shipping - Tracked 对包含 3 或更多商品的订单折扣为 $15.00
世界其他地区
Standard Shipping - Tracked 对包含 2 或更多商品的订单折扣为 $25.00
|
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| DHL | $35.00 / ：几天天 | $35.00 / ：几天天 |
|
：国家
DHL 对包含 2 或更多商品的订单折扣为 $30.00
世界其他地区
DHL 对包含 2 或更多商品的订单折扣为 $30.00
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积极的Prompt shipping, stone as advertised
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消极的
I received the Aquamarine gemstone and it looked nothing like the description or picture on the auction site. The stone is clear with no shade of blue to it. VERY DISAPOINTED!!!
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积极的
Really fast delivery
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积极的
a dazzler of a stone and very fast ship
