Libyan Desert Glass, Great Sand Sea, Eastern Libya/ Western Egypt
Weight: 17 g
Dimensions: 3.7 (1.4”) x 3.2 (1.2”)
Libyan Desert glass or Great Sand Sea glass is an impactite, made mostly of lechatelierite, found in areas in the eastern Sahara, in the deserts of eastern Libya and western Egypt.
It's created when an extraterrestrial object such as a meteorite crashes into Earth.