Black clay with a brown red glaze. This was fired using the tamayaki process which is actually done in an old style kiln and wood fired for 18 hours (all done by people, no machines)! then left to cool down for 1 week. each piece is unique since its not a predictable firing process, i only glazed the inside of the vessel, outside was left natural, its like christmas waiting to see how your piece turned out! hehe