Jasper was a favorite gemstone in ancient times and is referenced in Greek, Hebrew, Assyrian and Latin literature. The name Jasper comes to us from the Greek language. Jaspis or the ancient spelling Iaspis was the name of a mythical stone found in the head of the adder snake. Greek warriors carried one to give them courage in battle. Early Mediterranean shamans or wizards believed that jasper was a very sacred stone. Blue colored Jaspers were used to travel safely back and forth to the Spirit World. Red Jasper represented the blood of the Great Mother and was used to connect with the Earth in healing ceremonies. Green Jaspers were used to call the rain. Medieval authors of the 11th and 12th centuries wrote volumes about the protective powers of the Jasper. It was written that the gemstone could drive away evil spirits and protect the wearer from the bites of poisonous snakes and spiders.