Moldavite
Hardness: 5 Color: green, bottle-green, forest green Formula: SiO2+Al2O3 Crystal System: amorphous It is named after its main locality (Trebic outskirts of Ceské Budejovice) Moldan River, its original Czech name is Vitavin. Moldavite is a tektite variation (meteorite glass). Probably moldavites are approximately 15 million years old parts of a meteorite which impacted near Stuttgart...