14K Gold Overlay Black Onyx Panel Bead Necklace Vintage 1970's 1980's Art Deco

16 inch black onyx and 14k yellow gold art deco style necklace. Shiny polished onyx beads with four 14k disk stations. The front has graduated trapazoid onyx panels with 14k overlays covering the outer third of each panel and both sides of the center panel. Thick substantial piece with an art deco geometric design. Marked 14k on the ball clasp and 14k AZ on the center piece. Also tests 14k. 1970's or 1980's. In excellent condition. Please message me with any questions