"Mosaic is the art of creating images with an assemblage of small pieces of colored glass, stone, or other materials."(Abstracted from Google Wikipedia)
Mosaic tiles could be made in granite mosaic tiles, marble mosaic tiles, slate mosaic tiles and onyx mosaic tiles. They are used as mosaic wall, mosaic ceiling, mosaic bench, mosaic table top, and mosaic floor. In some big size project, pebble mosaic is paved to form a specific shape or pattern.