Atomic Glass in Rock by Shaw Floors. Let your mind wander through the possibilities of design with the versatile collection of Atomic Glass mosaics. An array of glass blends, this collection of mosaics will make any tile setting a custom work of art. Within the design of the glass colors is a painted strie effect that creates a subtle ombre, or shaded, look. These can be cut in half to achieve a six inch listello/liner.