Fantastic Seller, Quick Response, An absolute pleasure!
|Dimensions (mm)||7.9 x 6.41 x 4.08mm|
|Weight (carats)||1.15 carats|
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
The estimated delivery date was August 16, I have not received yet. It is now August 28. Tracking number given is stated as invalid
The Gemstone Sheriff program allows our members to request an audit on any auction, which is completed by an independent Gemologist who assesses the accuracy of the item description and pictures.
|Starts||13th Sep 2021 5:42am PDT|
|Ends||20th Sep 2021 5:42am PDT|
|Standard Shipping - Tracked||$12.00||21 days|
|Shipping Insurance all providers $0.00 (optional)|