This is a marcasite brooch in the shape of a lizard. It has a C clasp and the back looks like rhodium. The brooch is not signed. It measures 2-3/4 inches long and 1-1/4 inches wide. I can't tell if the marcasites are glued on or stamped into the setting. The brooch is in good condition but may need cleaning or polishing. Please let me know if you have any questions. Thanks for stopping by.