whats the difference between pokemon d/p and pokemon quartz?
soap and water does a good job, if the stain is on the outside. However, sometimes, it takes a bit of polishing. Usually rock experts will use a tumbling machine, with uses a find grit sand to smooth' the surface of things like quartz. Very fine sandpaper can achieve a similar effect, but it can take hours of elbow grease to get a highly polished surface.
