NATURAL COBBLESTONE BLACK 4" x 4" x 4" Natural Black Cobblestone is an ideal choice for any area to create traditional or contemporary landscaping. These bold driveway cobbles are durable due to the nature of the granite base. They are widely used in the construction of commercial streets and parking areas of shopping malls or office complexes. Furthermore, these are suitable for walkways, driveways, kitchen counters, and fire pits.