Beginning in 1920, the Art Deco period signaled the start of the modern era. Jewelry, like the art of the period, was designed to evoke images of technology of the jetliner, the skyscraper and prosperity. It used bold colors, dramatic geometric designs, and continued some of the animal motifs of the Art Nouveau era which preceded it. This black crystal Art Deco bangle feature highly sculpted surfaces and are plated with rhodium, a gleaming metal more precious than platinum,as well as dazzling black and diamond-colored Swarovski crystals. 2 1/2" inside dia.