This is a lustrous, LARGE (9 x 4 x 2.1 cm) single composite crystal with excellent luster & color! It has very good clarity in the top portions, though the lower part is darker because of the thickness of the crystal. It is not the "finest" crystal in the lot in terms of crystallographic form, but it IS nevertheless a complete and large crystal that is both colorful and will be visually appealing to many folks. It has a small amount of matrix on the back.