Estate Black Onyx Necklace with Fresh Water Pearls and Gold Spacer Beads. This glamorous necklace is 34 inches in length. We estimate it's age to be circa 1970-1980 yet done in the Art Deco Rope style. There is no clasp so you can double it or wear it any way you please. This estate necklace is made up of polished black onyx beads, fresh water pearls and gold spacer beads. We were told the spacer beads are 14K Gold but we are erring on the side of caution and calling them Gold Filled. This striking black onyx and white pearl necklace is in very good vintage condition.