This c. 1920s-1930s Napier necklace, features faceted circ. crystal beads flanked by gold-plated brass filigree spacers terminating to an oval clasp. The necklace can be worn with the clasp either in the front or back. Three known colors of this design include amethyst, blue topaz and topaz colored beads. The clasp has a patented date of 9/8/1929.