NATURAL GRANDIDEIRITE SPECIMEN WITH TOURMALINE CRYSTALS
Weight : 46.85 Cts
Height : 32 mm
Width : 17 mm
Mineral : Madagascar
Treatment : None (Natural)
Grandidierite is an extremely rare mineral and gem that was first discovered in 1902 in southern Madagascar.
Mohs scale hardness: 7.5
Optical properties: Biaxial (-)
Crystal system: Orthorhombic
Color: Bluish green
Refractive Index: 1.590 to 1.623
Grandidierite have been found in only a few locations around the world, including Malawi, Namibia and Sri Lanka and few gem quality specimens have come mainly from Madagascar.
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