Beautifully detailed Art Deco platinum diamond and onyx ring, circa 1920. The center onyx is bevelled and cut with subtle facets, and an bright Old European Cut diamond weighing 0.50 carats approximately is set in the onyx. The shoulders of the ring alternate rows of diamond and cut onyx along the side. Scroll work further accents the under gallery of the ring. It is low to the finger. The ring is a size 7 currently and can be sized.