Plainsman Stoneware Clay - M390 $49.99 Very plastic high iron clay body. Smooth in texture, it is the darkest firing of the medium temperature red bodies. Very plastic high iron clay body. Smooth in texture, it is the darkest firing of the medium temperature red bodies. Add To Cart Added! You Might Also Like CCS Speckled Stoneware Clay $49.99 Plainsman Earthenware Clay - Snow $69.99 Smooth Raku Clay $59.99 Plainsman Stoneware Clay - M340 $44.99 Sold Out Plainsman Porcelain Clay - P300 $74.99