Description Granite is a plutonic rock of the Earth’s crust, formed by the cooling of magma. Proline offers this highly natural looking Old Granite Cleft Stone in a 36″ x 36″ square tile pattern. Old Granite is easily characterized by veins running through the pattern. Looking for a matching Band Tool, check out our BT300- Soldier Course Granite Band Tool. Stamp size 36″ x 36″. Package savings reflected in price.