The name Coro comes from a combination of the first two letters of Cohen and Rosenberg who were partners in the manufacture of this line. During the depression this jewelry was sold in five and dime stores. Business was so good that during the depression (1929) they built a new jewelry factory in Providence, Rhode Island.

This company trademarked a unique type of brooch called the Coro Duette, which locks two separate dress clips together.  Collectors also prize Coro jelly belly pins, which are sought by collectors.