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3.50 Ct Incredible Natural Grandidierite Gemstone SKU A12
- UGS
- Dimensions (mm)
- 11.4 x 8.28 x 5.96mm
- Poids (cts)
- 3.5
- Couleurs
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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
| Fournisseur | Destination | Coût |
|---|---|---|
| Standard Shipping - Tracked Défaut |
Reste du monde
21
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premier article
par article supplémentaire
frais de port plafonnés à
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| DHL |
Reste du monde
10
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premier article
par article supplémentaire
frais de port plafonnés à
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| Standard Shipping - Tracked Défaut |
Thaïlande
15
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premier article
par article supplémentaire
frais de port plafonnés à
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| DHL |
Thaïlande
10
|
premier article
par article supplémentaire
frais de port plafonnés à
|
- UGS
- Dimensions (mm)
- 11.4 x 8.28 x 5.96 mm
- Poids (cts)
- 3.5
- Couleurs
-
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
| Fournisseur | Destination | Coût |
|---|---|---|
| Standard Shipping - Tracked Défaut |
Reste du monde
21
|
premier article
par article supplémentaire
frais de port plafonnés à
|
| DHL |
Reste du monde
10
|
premier article
par article supplémentaire
frais de port plafonnés à
|
| Standard Shipping - Tracked Défaut |
Thaïlande
15
|
premier article
par article supplémentaire
frais de port plafonnés à
|
| DHL |
Thaïlande
10
|
premier article
par article supplémentaire
frais de port plafonnés à
|
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PositifThank you for the very beautiful stone!
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Positif
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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Positif
Super de belle pierre Je recommande vivement Très satisfaite
Audit
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Description Précis
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Images précises
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.
