Fuseworks Dichroic Spiral 90 COE Fusible 2-Inch-by-3-Inch Glass, Violet Post-fired color, 1-Pack" /> Specially designed for use in the Fuseworks microwave kiln Coe 90 glass Black base glass with a violet post-fired color coating. Use as a base or as a surface embellishment Contains one 2-inch-by-3-inch sheet of post-fired violet color spiral dichroic glass