(in order to be usable the clay must be fired above 1200 degrees F (cone 010 to cone 04 MAX.) Firing is available from New Mexico Clay in Albuquerque.
Brand
New Mexico Clay
WARNING: This product can expose you to chemicals including Silica, crystalline (airborne particles of respirable size), which are known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.