Lovely pin by the Metropolitan Museum of Art. A gold plated pin of a Hawk with a garnet eye and enameled accents. I have not had the eye tested but looks like a garnet stone or possibly glass, but I think its a real garnet. It is in excellent condition. Signed on the back MMA. . It measures 2" x 1 1/2". , Also bird in my opinion is a hawk, could be another species.