Clay

What clay looks like: Estonian clay from the Quaternary epoch.

Clay is a fine-grained mineral made of aluminium silicate. When wet, clay has a plastic quality, and can be used to make pottery.Pottery is when clay used to model shapes and then fired in a kiln. You can then paint your clay with glaze.

Clay often contains some water because the water molecules stick to the tiny grains. There may also be some organic materials in the clay.