Extraordinary German Art Deco ring in sterling with three black onyx stones and abundant marcasites. The face is a bold polished onyx stone that measures 22mm, or 7/8" tall, by 9mm, or 3/8" wide. It is framed by intricately patterned sterling and marcasites that feature two round, bezel set onyx cabochons, 3mm each. This portion wraps around the finger, so the ring covers about 1-3/4" east to west! The condition is excellent, no chips, scratches or missing stones. The reverse shows shows some old glue residue around the big stone, not seen from the front. Size 5-1/2. Marked Sterling Germany.