This Art Deco bar brooch is formed from faceted, rectangular onyx-glass and crystal stones. Each end has a faceted, onyx-glass triangle. The silver-tone metal setting has cut-outs, creating a checkered pattern with the stones. They are all open-back, and the workmanship is superb. The trombone clasp and unusual design tell me this brooch is European in origin. I think the setting is sterling silver, but the mark is unreadable. Scroll down to see Art Deco earrings and bracelets that coordinate beautifully with this jewel. Black-and-white, so popular in the Twenties, never goes out of style!