This unusual piece, a cape, or sweater guard, could also be worn as a stand alone brooch. The two pin back elements are triangular, 1 3/8" X 3/4". One side is all metal; the other holds a bezel set 1/2" X 3/4" dark purple amethyst cabochon. Another similar stone hangs from a single oval link of chain. These stones may be synthetic. The two pins are connected with a 5 1/4" long, 6 link chain. Please look at photos to see this piece. There are no manufacturer's marks on this fine, well engineered piece.