Yellow Blue is a CBS standard dichroic coating. This coating is applied to thin Bullseye color Striking yellow. As the dichroic coating breaks up during firing the colored glass shows through. This glass is coated specially for Dichroic, Inc. This coating is offered in 4x4 inch squares only. Please Note: Colored dichroic glass is exceptionally hard to photgraph. Glass is much brighter than it appears.  STRIKING YELLOW LOOKS CLEAR UNTIL FIRED!