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Incredible Color 5.75 Ct Incredible Natural Grandidierite Gemstone
- SKU
- Dimensions (mm)
- 13.08 x 11 x 6.23mm
- Weight (cts)
- 5.75
- Treatment
- No Treatment
- Type
- Faceted
- Colours
-
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
| Provider | Destination | Cost |
|---|---|---|
| Standard Shipping - Tracked Default |
Rest of World
21 days
|
first item
per additional item
shipping capped at
|
| DHL |
Rest of World
10 days
|
first item
per additional item
shipping capped at
|
| Standard Shipping - Tracked Default |
Thailand
15 days
|
first item
per additional item
shipping capped at
|
| DHL |
Thailand
10 days
|
first item
per additional item
shipping capped at
|
- SKU
- Dimensions (mm)
- 13.08 x 11 x 6.23 mm
- Weight (cts)
- 5.75
- Treatment
- No Treatment
- Type
- Faceted
- Colours
-
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
| Provider | Destination | Cost |
|---|---|---|
| Standard Shipping - Tracked Default |
Rest of World
21 days
|
first item
per additional item
shipping capped at
|
| DHL |
Rest of World
10 days
|
first item
per additional item
shipping capped at
|
| Standard Shipping - Tracked Default |
Thailand
15 days
|
first item
per additional item
shipping capped at
|
| DHL |
Thailand
10 days
|
first item
per additional item
shipping capped at
|
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PositiveBeautiful green and quick shipping!
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Positive
Lovely in person, fast delivery!
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Positive
Nice stone
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Positive
Exactly as pictured. Well cut, packaged and timely postage. Thank you would purchase again from this seller.
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Negative
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.
