Do you have nasty hard water stains? Give Diamond Magic a try! Diamond Magic is a creme compound specifically formulated with real diamond dust to make a formidable stain remover and polishing compound. Diamond Magic uses multi-level sub-micron diamond dust, compounded with a compatible paste creating a synergy that cleans and polishes unpainted metal, glass, tile & porcelain to a near new condition. This can be used inside and outside as it will not harm glass or metal surfaces unless extreme pressure is applied. Using Diamond Magic is simple: just apply a small amount to an abrasive pad and you are set to start cleaning those hard water stains!