Libyan Desert Glass - 4 Grams This mineral is naturally gray

This mineral is naturally gray or black in color and contains the same crystal structure as the mineral corundum

Its name is derived from the Greek phrase pyrites lithos translating to the stone which strikes fire

This specimen was found in the Solnhofen Limestone of Germany

If this tooth still had the very tip it would be over 3 inches

Libyan Desert Glass - 4 Grams This mineral is naturally grayLibyan Desert Glass (LDG), is a tektite found in the Sahara deserts of Western Egypt, near the Libyan border. No one is positive about how this tektite has formed. Some research suggests the impact of a meteorite may have caused it. The heat and pressure from this impact would have melted the silica through radiation, similar to the thermal radiation present in a nuclear explosion. Another theory is the bursting of an asteroid as it passes through