A lovely Brooch & Matching Earrings from ©Coro. Designed as a leaf Brooch with florentined leaves and prong set field of aurora borealis faceted rhinestones. The Earrings are clipback and match the Brooch. A great collectible set of 1950s CORO. CORO Jewelry -- Founded in 1900s by Cohn and Rosenberger. In the 20s they built their own factory in Providence, RI and became the leading and largest manufacturer of costume jewelry in the US.