Cabochons are rounded jewels, usually with flat backs and never with facets. White mother of pearl cabochons set within steel necklaces were popular in the Georgian period, while black jet cabochons were worn during the Victorian Era as a sign of mourning. In the 20th century, Vendome, Coro's top-of-the-line brand, combined rounded crystal cabochons with faceted glass in earrings and bracelets, while Miram Haskell surrounded the luminous cabochons in her necklaces with swarms of sparkling rhinestones.