Fired Shrinkage is 12% and Water Absorption is 1% when fired to cone 10. A deep brown/black clay, medium in texture. Great for the wheel. Volume discounts apply. Needs lots of oxygen during the bisque firing to avoid bloating in the glaze firing. - ⚠ WARNING - This product can expose you to crystalline silica (quartz) which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov