Moldavite is found in South Bohemia, Bohemia, Czech Republic. They were created approximately 14.7 million years ago when a giant meteorite impacted the earth near modern day Nordinger Res. The liquefied crust, caused by the impact, was ejected into the atmosphere and then fell back to earth in a scattered pattern extending hundreds of square miles. As the molten material fell splatter and aerodynamic surfaces were created on the pieces as they cooled. It is a unique green tektite that is similar to obsidian or volcanic glass and contains the elements Si and O. This moldavite tektite measures 18 x 15 x 10 mm and weighs 2.1 grams.