The Historic Battle Mountain Blue Gem Turquoise mine was located in the Copper Basin area Southwest of Battle Mountain, Nevada. Production of this turquoise mine started about 1934 and continued until the 1970s. It is some of the finest turquoise ever found and most of it was gem quality. The mine no longer exists due to extensive copper and gold mining in the area. Lee Hand who owned and operated the mine until 1970 knew C. G. Wallace and provided much of the blue turquoise used by Zuni carvers and jewelry makers. Most finished Blue Gem turquoise jewelry today is in private and museum collections, rarely offered for sale.