I used dark annealed steel wire from the hardware store for a framework, and fine-gauge copper wire to wrap agate chips and attach them to the frame, along with amethyst chips, garnets, and Czech glass beads.
I hope the publishers at Interweave Press like this enough to include it in my new book!
I also got some great news today: Art Jewelry magazine is interested in publishing a how-to article in a future issue on my Big Heart Pin. I don't have any more information about this yet, but I'll let you all know when I find out which issue it will appear in. I'm very excited and certainly very honored to have a project accepted by this fine magazine!