In the past few years electroforming has been catching on more in the lampworking world. It’s the process where you use an electrolytic bath to transfer copper particles onto a form that you have formed. (The copper shown in the middle of this disk bead).
I love the hint of animal print contrasted with the turquoise and metal. The copper sure does make holes of beads more interesting. You can find this bead at the Art Zoo Blog.