In the Guild.com site I found only one piece of polymer, this "O’Keeffe Pin" by Ford and Forlano. These two artists, the text says, "…primarily make one-of-a-kind jewelry, passing pieces back and forth between themselves at different stages in the creative process. With the introduction of precious materials such as sterling silver, gold, and pearls, their work is as bold and expressive as ever. Part of their goal is to transform an inorganic, man-made material into something that looks as if it was found on the beach, or growing in the woods."
that brooch is amzing, the price also speaks