Van Cleef & Arpels (VCA) Onyx, Coral, Chrysoprase and Diamond Four Ring Set in 18k Yellow Gold, circa 1976

Comprising four stacking rings, each of chevron design, the yellow-gold shoulders pavé-set with circular-cut diamonds, the apex alternately set with polished chrysoprase, pink coral, white coral and black onyx, mounted in 18k yellow gold. All signed VCA, with French assay mark for 18k gold, and maker's mark for Société Janca, dated 1976.