Olivine is a magnesium iron silicate mineral and belongs to the orthorhombic crystal system. Die Kristalle sind kurzsäulenförmig. Complete crystals are rare. Most of them are irregular round granular aggregates. They have glass luster, transparent bis durchscheinend, und Härte von 6.5-7.0. Olivine is a kind of self-colored gemstone, which is green due to iron […]
