The Art Clay series of products are made of pure metal powders mixed with non-toxic binders and water. When kiln, torch or stove top fired, the binders burn away, leaving pure silver (99.9% silver), pure copper (more than 99.5% copper), or gold (22K). The Art Clay Range is easy to handle, and you can freely shape it just like with the modeling clay you used when you were a child. After firing at the proper temperature and holding time you will get a one-of-a-kind pure silver, gold, or copper piece.