Mark an X on the area of stone you don't want. Repeat this process for the remaining three sides. Safety Alert: Be sure to put on your safety glasses for the next step! Select a carbide chisel and stone hammer that is appropriate for the size of the stone you're cutting. For smaller stones use a finish chisel and lighter weight hammer. For larger stones, select a heavy duty chisel and heavier hammer. Follow your pencil marks and score a line all the way around the stone (figure N). The final cut should be made along the narrowest edge (figure O). Rock Solid Pro Tip: For a professional look, you never want to leave a piece of stone with a saw-cut face exposed in your work only the natural edge or natural face of the stone. (A saw-cut face is where a diamond blade cut the granite into workable pieces.)