The term “ceramic tile” is often used as a generic name for all types of tile, but the composition of true ceramic is very different from that of the other types. Ceramic is made primarily of clay mixed with various minerals and water. The composition is then processed with heat to create the solidified product. Since ceramic material is porous, the top surface is usually sealed with a glaze. The glazed surface is referred to as the design layer since it determines the tile’s finished color, design, and texture.