Here are a couple of pictures as promised last night.
Some of these have specs of vermiculite permanently attached as i dropped them into the tin too soon, but other than that, they came out fabulously. I used 1 iron filigree bead from the kit, the rest are copper metal clay, or copper headpins. I'm going to try tumbling the headpins to see how the enamel holds up. Headpins I've heard through the painting with fire forums, have a tendency to break. They seem to be fine to me, but we'll see after a short tumble.
The colour possibilities are endless. Enamels come in a variety of opaque, and transparent colours. By layering the transparent colours over the opaques, you can create entirely new shades.
All said, the process is fun. As long as you have the ability to set up a little hothead torch in a well ventilated space, you can do this at home! Oh, and of course - always wear an appropriate mask when working with enamels.