This is the Dive Flag Ring Rhodium Plated Bronze Scuba Diver Jewelry Features: Tarnish-free Rhodium-plated bronze Attractive, durable chip inlay dive flag design Eco-friendly chip inlays are simulated red coral & mother of pearl Sizes 4.5 - 6.5 dimensions: flag width 1/2, flag height 1/4", thickness of ring top 3/16" Sizes 7.5 - 13.5 dimension: flag width 5/8", flag height 5/16", thickness of ring top 1/8" Rhodium is a rare, silver to white metal that belongs to the Platinum group of metals. It is about 10 times more costly than gold, but because it is a "noble metal" and inert, it will not tarnish and makes jewelry more durable. Use of simulated inlay in Dive Flag Jewelry protects our reefs! "