A sheet of decorative glass for forming an artistic light pattern on a surface proximate to the glass. One surface of the glass sheet comprises a plurality of facets, each of which is associated with several other facets so as to form a projecting section. Each of said facets is designed to refract incident light so as to form a light pattern having a discrete, readily observable geometric pattern. Under certain lighting conditions, the light pattern will include a color distribution comprising some or all of the visible color spectrum.