Royston Turquoise Mine Tonopah . Royston Turquoise comes from the Royston mining district located near Tonapah, Nevada. "Royston Turquoise," originally consisted of four old Turquoise claims: Bunker Hill, Easter Blue, Oscar Wehrend, and Royal Blue. Lynn Otteson moved to Tonopah to mine Royston Turquoise in 1958 and the family have been Turquoise Minors since. Royston Turquoise in known world wide for having a wide range of Turquoise colors from a beautiful soft blue to emerald greens.