Zam is a hard and versatile polishing compound that is especially formulated for use with silver and turquoise jewelry (as it will not scratch delicate or fragile stones). It is time-saving to use, because stones do not need to be removed prior to buffing a new piece. It leaves a high-luster finish without any residue. Fast clean-up; does not cling to or penetrate the surface of stones. Includes a 1 lb push-up style tube (please note that this comes lid-less).