1/18    I know glass is SiO2, but what is 'stoneware'?
        \_ Just a guess that it is a type of clay.
           \_ Which is chemically what?
              \_ STFW maybe?  *sheesh*
              \_ Clay is Al2O3.2SiO2.2H20 in a general sense, but not all
                 clays are exactly the same.