Characteristics of Moldavite:

Chemical Name: Silicon dioxide

Formula: SiO2(+Al2O3)

Colors: Mossy green, greenish yellow

Structure: Amorphous

Hardness: 5.5

Specific Gravity: 2.40

Refractive Index: 1.48-1.54

Lustre: Vitreous

Locations: Germany, Czech Republic

What is Moldavite? 

Moldavite were formed 15 million years ago, when a meteorite stuck near modern Ries, Bavaria, melting the local sandstone. The substance is a tektite, the name for minerals formed when large meteorites hit Earth; the terrestrial rock melts on impact, is splashed into the air, and quickly cools to form the glass-like substance. Tektites are found on most continents, but Moldavite is local to the Ries impact point. It is typically olive-green to dull greenish yellow, and is found in sizes ranging from less than a millimeter to several centimeters across.