Libyan Desert Glass - 11 Grams roughly 20

roughly 20

calcium (white)

Obsidian has been used to make surgical blades and arrowheads throughout history because of its naturally sharp cleavage

MadagascarYou will receive the ammonite pictured

Libyan Desert Glass - 11 Grams roughly 20Libyan 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