This product is made up of silver particles from recycled film, organic binders, and water. The clay form can be shaped, rolled out and cut, or stamped with designs. When it is completely dry, it can be filed or sanded. During kiln firing at high temperatures, the binders burn away, resulting in a 99.9% silver item. This product is also available in paste, sheet, or syringe form. Some people who are allergic to the alloys in sterling silver (92.5% silver and 7.5% other metals) can sometimes wear the 99.9% silver item.