Vitreous enamels are highly pigmented ground glass that can be applied or melted to the surface of glass or metal to color it. The 9000 series has been especially prepared to “fit” Effetre glass. The 32 opaque colors and 14 transparent colors are produced in 80 mesh, powder form and can be rolled or sifted onto the surface, encased and kneaded into the glass to alter or produce new colors. You can use these enamels for surface coloration of beads and to make stringers of a different color. This assortment contains 46 different colors.