Vintage costume jewelry is old imitation jewelry. It was worn as inexpensive alternatives to real jewelry. Vintage costume jewelry typically is better in workmanship and higher quality stones were used. Vintage Rhinestone and Crystal jewelry is the most sought after and most difficult to find. Some of the notable makers of vintage palette jewelry known to me are Weiss, Coro, Pell, Curtis Mfg, Jay Flex, Monet, Avon, Renoir, Matisse and Rebajes.