Crystal mosaic tiles, which can be see through so it gets the name as "crystal", but with the color paints on the back of the mosaic tiles makes thousands of colors are possible. The glass tile used in great numbers by builders and tilers for common tasks such as shower bases and swimming pool edging, but these useful mini mosaic tiles can readily be adapted for artistic craft work. They are usually supplied on a backing sheet of light fabric mesh, from which they are easily detached with warm water. Crystal glass tiles are extremely durable and almost totally stain resistant.