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3.50 Ct Incredible Natural Grandidierite Gemstone SKU A12
- SKU
- Dimensiones (mm)
- 11.4 x 8.28 x 5.96mm
- Peso (cts)
- 3.5
- Colores
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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
| Proveedor | Destino | Costo |
|---|---|---|
| Standard Shipping - Tracked Por defecto |
Resto del mundo
21 días días
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| Standard Shipping - Tracked Por defecto |
Tailandia
15 días días
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| DHL |
Tailandia
10 días días
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- SKU
- Dimensiones (mm)
- 11.4 x 8.28 x 5.96 mm
- Peso (cts)
- 3.5
- Colores
-
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
| Proveedor | Destino | Costo |
|---|---|---|
| Standard Shipping - Tracked Por defecto |
Resto del mundo
21 días días
|
primer artículo
por artículo adicional
Envío limitado a
|
| DHL |
Resto del mundo
10 días días
|
primer artículo
por artículo adicional
Envío limitado a
|
| Standard Shipping - Tracked Por defecto |
Tailandia
15 días días
|
primer artículo
por artículo adicional
Envío limitado a
|
| DHL |
Tailandia
10 días días
|
primer artículo
por artículo adicional
Envío limitado a
|
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PositivoThank you for the very beautiful stone!
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Positivo
I am so happy to have this gem! I seen it a couple of months back and let it slip through my fingers, but not this time!! The certificate was also included. Thank you :)
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Positivo
Super de belle pierre Je recommande vivement Très satisfaite
Auditoría
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Descripción Precisa
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Imágenes precisas
Comments
The Verified Seller responsible for this item has diligently provided us with accurate and comprehensive information, encompassing crucial details such as weight, dimensions, and treatment. It is important to reiterate our commitment to upholding the highest standards of integrity and transparency in the gemstone industry. As part of our policy, we strictly permit the sale of exclusively natural gemstones that have been sourced directly from the Earth. However, in the event that a gemstone has undergone any form of treatment, it is mandatory for the seller to provide full disclosure regarding the treatment process. Furthermore, we would like to emphasize that man-made gemstones, including simulants and imitations, are strictly prohibited on our platform. We prioritize the promotion of authentic, natural gemstones to ensure a genuine and trustworthy marketplace for our valued customers. Should you have any further inquiries or require additional assistance, please do not hesitate to reach out. We are here to assist you and provide a seamless experience on Gem Rock Auctions.
