|Materials||A1 Ball Clay|
|Materials||A3 Stoneware Clay|
|Materials||A2 Ball Clay|
|Materials||3C White Ball Clay|
A sought-after visual effect that occurs in reduction fired stoneware. Particles of iron pyrite that occur naturally in the clay melt and blossom up through the glaze
A common problem with dry and fired ceramic. It is evident by the presence of a light or dark colored scum on the dry or fired surface.