If you are at all familiar with my work than you already know that I do a lot of faux silver finishing for my jewelry. I love metallics and mostly achieve this look by applying Eberhard Faber pulver to black clay.
(Sometimes I use Pearlex powders ) However there is a drawback to using the powders because you have to decide on your desired metallic before you bake. Otherwise the powder won't adhere properly. Then of course you need to apply some kind of protective finish (Future floor polish or Flecto Varathane) Since silver is my fav, this method isn't always a problem, and typically, at any given time i will have several baked bezels to choose from on my work table. Some are black some are gold or copper but most are silver. Lately