Libyan desert glass is a naturally occurring, translucent yellow-green glass found in the eastern Sahara Desert, particularly in Libya, Egypt, and Sudan. Believed to have formed around 26 million years ago, it's thought to have resulted from a meteorite impact that melted and fused the surrounding sand into glass. Its unique appearance and rarity have made it a popular collector's item and a subject of scientific interest. 11 Grams libyan desert glass Crystal. Condition is New. Dispatched with Royal Mail 2nd Class Large Letter.