PMC stands for Precious metal Clay. It is manufactured by Mitsubishi Materials Corporation in Japan. It is currently available in fine silver (0.999%) and 24K gold. The clay is made up of small silver particles combined with a non toxic binder and water. Once fired the non toxic binder burns away and the water evaporates. It leaves the finished piece in its ‘original ‘ state, giving you the choice of type of finish. This means that your silver does not have to be the high shine that we associate with silver but can be finished to give a matt or semi-matt appearance simply by using a stainless steel brush. The same applies to gold.