Flat Pebble Tiles are12" x 12" Interlocking Stone Size: 3/4" to 2 1/2" Thickness: Appx 1/2"Flat Pebble Tile is made of similar looking flat stones that are organized and then mounted onto a standard sq/ft mesh backing. These small polished rocks are mostly collected from the beaches of various South East Asian Islands. There are so many applications provided by this unique tiling technique: Kitchen walls, bathrooms & showers, flooring, counter tops, patio floors, swimming pools & fireplaces..