Three's company, and this Van Cleef & Arpels Paris modernist 18 karat polished yellow gold three stone ring is all the companionship you will need. With one center cushion cut peridot gemstone and two amethyst side stones, this exciting one-of-a-kind ring will be like family. Signed VCA. Circa 1980. Serial number B5894D18 Size 5 3/4.