The ideal clay for durable dishes and other decorative ware. Requires little to no wedging. Excellent for hand building, coils, sculpture and wheel throwing.?Recommended glaze firing temperature is Cone 5, firing range is Cone 5-10. Fired at Cone 5 the semi-vitreous bisque is a buff color; at Cone 10 the very dense, vitreous bisque is a soft gray color. 50 lb. box, moist. Talc- and gluten-free. AP Seal, non-toxic. Quantity discount not available in retail stores.