NPT Rustic Ledgestone Corners Grist Mill is made up of a variety of irregular shapes and sizes and roughly textured to create a rustic appearance. This versatile pattern will create a dramatic impression on the interior or exterior designs. This ledge stone is a stone veneer product measuring 1" to 2" thick and are suitable for interior applications such as stone accent walls or stone fireplaces as well as exterior applications such as stone veneer siding.