An attractive complex balls of Pyrite crystals set beautifully in and against a black shale matrix. The larger ball is about 3 cm across, and the smaller disc is 1.5 cm across. The large sphere is composed of modified cubes, and has excellent metallic luster. The smaller disc, as well as the elongated 3.5 cm disc along the side, are composed of very fine, almost drusy, Pyrite crystals that give it a wonderfully delicate sparkle. Very unusual material. Ex. Charlie Key stock.