Because of constant volcanic activity, you’ll find white sands, green sands and black sands on Hawaii Island. Located on the southeastern Kau coast, Punaluu Black Sand Beach is one of the most famous black sand beaches in Hawaii.
Diamond Head, Oahu, Hawaii is the name of a volcanic tuff cone on the Hawaiian island of O'ahu. Its English name was given by British sailors in the century, who mistook calcite crystals on the adjacent beach for diamonds. Hawaii is the state.