These circle stud earrings are available in sizes small and large. The small version measures 3/8″ by 3/8″ at their widest point, and the large measures 1/2″ by 1/2″. Materials: 14k gold or rose gold-fill (14k gold over brass core/no nickel) or sterling silver (.925). All materials are hypoallergenic. These earrings are designed in San Francisco and handmade in our Upstate New York production studio.