Clay is a type of soil made of tiny rock particles that can be molded and shaped. It was traditionally used to make pots, jars and sculptures, and remains a popular material for children's modeling. There are different types of clay suitable for sculpting, including oil-based clay that dries shiny and water-based clay that dries more quickly. Basic sculpting techniques like coil pottery and freehand modeling allow artists to form clay into any desired shape or form.