Iron Pyrite, Crystals: Educational Innovations, Inc.
Iron Pyrite - or Iron Sulfide (FeS 2 ) is fairly heavy and looks similar, in many ways, to gold, gaining it the popular name Fool's Gold. Prized for centuries by Alchemists and Native Americans for perceived mystical powers, it has also been used in jewelry by the ancient Egyptians, in early firearms, and, more recently, studied for use in photovoltaic cell for …