Coro, founded in 1901 by Emanuel Cohn and Gerald Rosenberg, became one of the largest and most influential costume jewelry manufacturers in the 20th century. Known for its affordable yet stylish designs, Coro produced a wide range of jewelry, from playful motifs to sophisticated, high-end pieces under lines like "Vendome." The company was renowned for innovation, utilizing quality materials like rhinestones, enamel, and gold plating. Coro jewelry remained a staple in American fashion until it ceased operations in the late 1970s, leaving a legacy of timeless and collectible designs cherished by vintage enthusiasts today.