This looks to be an artist made necklace. The sterling chain is quite unique and looks to be made by hand. It is made up of black and white art glass beads. The dangling heart pendant measures 1" X 7/8". There are six flat striped beads that measure 5/8" X 3/8". On either side of them is an iridescent black faceted bead. There are also black faceted elongated beads with white beads on either side. The lobster clasp is stamped sterling. The length is 17". Excellent condition.
Vintage Sterling Black & White Art Glass Necklace With Heart