This is jewelry from Mitsubishi Materials. It's a pendant head with small stones arranged in an X shape. It's the type that you thread a chain through to use. I think it's rhodium-plated because it didn't turn black or tarnish even when stored. I liked it because it has a genuine and luxurious feel since it's not overly large, but I'm selling it because I have many similar items. The chain is not included.