Large Antique Edwardian Art Nouveau Gold Plated Buckle Brooch / Sash Pin

This is a large antique Art Nouveau style buckle brooch or sash pin with an odd, marbled cabochon in the center. The cabochon feels like plastic and contains metallic green swirled within a matte orange color. The piece appears to be gold-plated, and there are many areas on the front where the gold color has worn away. Additionally, there is some green tarnish on the front. The c-clasp has been pushed down almost all the way, but the pin can still come out. Overall, the piece is still in pretty good shape for its age. Approximate Dimensions: 2.5in x 1.75in