We use several different abrasiveA substance used to sand, scour, scrub, smooth or polish by removal of the original material. The amount of material removed is determined by the size of the abrasive particles used (ie: grit) Sandpaper, scouring powders & steel wool are examples of abrasives. processes developed specifically for cleaning all types of natural stone. Custom abrasive processes are used for finishing Travertine, Marble and Limestone, as well as all the standard methods available in the world for finishing stone.