Duncan® Color Burst Crystal Chips™ will make your ceramic art projects explode with an eruption of color! Available in a popular array of colors and various sized chips, Color Burst Crystal Chips can be mixed with any of your favorite glazes or placed where desired, when the glaze is wet, to create one-of-a-kind pieces that explode with vibrant bursts of color. Crystal chips will react differently in the firing process. Depending on what glaze you pair them with, changing the color, burst size or amount of flow. Firing range cone 06 to cone 6.