Crystal Glass Tiles are made of crystal clear glass. They come in a variety of patterns, styles and colors. They can be squared, subway, round and interlocking patterns. And the general thickness are 8 mm. These tiles went through high temperature kiln during production. So the colors will never fade away. Nowadays, more and more new crafts added in, such as inner crackle, wave backing, gold foil backing, hand printing backing, making the tiles look terrific. They are highly recommended for kitchen backsplash, bathroom wall, mirror deco, shower wall floor, fireplace deco.