This unusual specimen is an extremely rare #gemstone from Southern Madagascar. Measuring 19.60 x 7.9
This unusual specimen is an extremely rare #gemstone from Southern Madagascar. Measuring 19.60 x 7.90 x 7.8mm and weighing 11.97-carats, the crystal appears to be exceptionally clean with an obvious orthorhombic habit. Considered to be one of the rarest minerals on earth, #Grandidierite is a gem collector’s dream for its extreme rarity, its relatively high hardness and for the strongly saturated neon colors in which it may occur. We expect to retrieve a 5.00 to 6.00-carat faceted stone from this one although its still open for offers from crystal collectors. -- source link
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