Renaissance Wax forms a durable, transparent, and lustrous protective coating that will not discolor. Use it on all metals, gems, glass, bone, mother-of-pearl, stone and more. Prevents tarnish and corrosion by creating a barrier to dirt, fingerprints and moisture. Non-staining, non-abrasive, and it cleans beautifully -- lifting oil, dirt and the murky buildup of other polishes. Use sparingly, rub lightly, and buff to a hard transparent finish (will retain a matte finish when unpolished). "