Peridot (also known as the "evening emerald" and chrysolite) is a yellow-green semi-precious stone with an oily luster. The name is derived from the Greek word peridona, meaning to provide plentifully. Peridot is the gem form of the mineral olivine. Because the iron which creates the color is an integral part of its structure, it is found only in green, ranging from a summery light yellowish green to a 7-up bottle green. Peridot is said to have had the power to drive away evil spirits and the power was considered to be even more intense when the stone was set in gold. Peridot was also said to strengthen the power of any medicine drunk from goblets carved from the gemstone.