Bar pin or "lace pin" made up of two different metal types---rounded outside border made from sterling silver, while interior frame is made of brass gilded with gold. Silver exterior frame is engraved on top, has open edgework along sides. Interior center of pin featured a silver diamond-shaped setting, in which is set a rounded faceted clear rhinestone. There is a 4-prong setting on this stone. Round hinge on back and early style safety clasp. Stamped on the pin stem, near hinge, are "F.P.Co." which is the mark of Ford, Perry Co. of Providence, R.I. in business from 1914-1922. 1 1/4" long 1/2" wide