Silver Metal Clay, Polymer Clay Workshops The silver metal clay can be moulded, textured, carved and sculpted; it is then fired with a torch or fired in a kiln to transform it into pure silver. Polymer clay is an incredibly versatile material that can be made to look like anything from glass to ivory. It can be drilled, carved, moulded, stamped, sanded, painted and polished. Light weight and easy to wear. Classes to learn all the latest techniques.