The Artists Choice series is comprised of cone 05 oxidation colors that look like high fired reduction stoneware. They can be fired over any earthenware clay, however they look their best over dark or red firing clay. The color in the clay will partially show through the texture and add another color dimension to the glaze. This class pack contains Aztec Turquoise, Exotic Blue, Peacock, Camel, Iron Saturate, and Seafoam Green. AMACO?? reserves the right to substitute a glaze or underglaze of similar color and equal or greater value when necessary and without prior notice.