Dichroic glass is a high-tech spin-off of the space industry. The glass tile is coated with micro-thin layers of titanium, silicon and magnesium in a high temperature vacuum. This coating creates a mysterious light transmitting quality that is as iridescent as butterfly wings or fine opals. The glass is permanent and not affected by moisture or most chemicals. Dunis Dichroic Glass tiles are like fine jewelry, glamorous, desirable and rare. Any size shown can be made as a 2x2, 3x3, 4x4, 6x6, or 8x8 tile.