Among collectors of vintage costume jewelry, copper jewelry is usually associated with Jerry Fels, who founded Renoir of California in 1946 and Matisse Ltd. in 1952. Renoir pieces took their inspiration from the Arts and Crafts era, when copper was a favorite of artisans producing hammered hollowware. Renoir was known for its solid copper cuffs, as well as its hinged bangles. Decorations on these pieces ranged from twisted strands of copper...Continue Reading