Nice Victorian platinum brooch with a small diamond in the center. The piece is 15mm X 38mm in size. While not marked, I've had the piece to two jewelers for opinions...both assured my that it was platinum and I'll guarantee it as that with a return policy. It weighs 3.7 grams, so it's about 1/10 oz. of platinum if you subtract for the pin. A beautiful antique piece (the photo doesn't do it justice) that would make a nice gift for the lady in your life - $125.00 delivered. PM me if interested.