Vintage 20s Genuine Black Onyx Necklace

Vintage 1920s Art Deco genuine black onyx bead necklace with tear drop centre gemstone. Measuring 20 inches total length with classic bead hook catch clasp. Graduated round beads with 10 faceted large beads. Individually knotted up to faceted beads and then tiny round onyx spacers. Art deco with faceted paste rhinestone clasp has wear to underside. In otherwise excellent vintage/antique condition. Smoke free, pet free home.