PMC (Precious Metal Clay)
Precious Metal Clay is a clay-like substance containing metal particles suspended in plasticizers.
This is NOT polymer clay.
PMC has to be fired at high temperatures (above 800F) produced by a kiln or a torch while polymer clay may be cured in a regular oven (requires 275F to 300F, depending on the brand). Once fired, PMC object will look like silver, gold, or bronze (depending on its type).