We can't use ANY hammer drill on stone tops, the many repeated impacts will eventually cause failure in the material. Some may work, most won't. Quartz is made up of about 93% natural Quartz chips, and the rest an epoxy binder resin. It's heated and pressed together in a huge line, and when cooled is extremely durable, but if you start creating point heat/impacts nearing the manufacturing process, all bets are off.