Top 10 Rarest Gemstones in the world

2. Grandidierite

Grandidierite was first discovered in Southern Madagascar in 1902 and was named in honor of french explorer Alfred Grandidier. It’s almost impossible to find, and samples of Grandidierite have been found in locations around the world such as Sri Lanka and Namibia. Also, it’s one of the rarest gemstones on earth.

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