This is a handmade brooch with 14K gold, sterling and copper. It is signed Robin Kahn. The brooch reminds me of a shell. The brooch measures 2-1/4 inches by 1-1/2 inches. The brooch is in very good condition and appears to have been gently worn, if at all. However, it may need additional polishing. Please let me know if you have any questions. Thanks for stopping by.