Clays made of Fine Silver 999.

SILVER CLAYS CONSISTS OF MICROSCOPIC PARTICLES OF SILVER SUSPENDED IN AN ORGANIC BINDER TO CREATE A PLIABLE MATERIAL WITH A CONSISTENCY LIKE MODELING CLAY.
There is no clay in Metal clay, it is clay made of metal not dirt.
Metal Clay can be worked with the fingers and with simple tools to create a vast range of forms and surfaces difficult or laborious with traditional techniques. When it is heated to a high temperature, the binder burns away and the metal particles fuse to form solid metal that can be sanded, soldered, colored, and polished like conventional material.