Cameo by Giovanni Jacopo Caraglio; Bona Sforza (1493-1557); Queen of Poland; Polish; Krakow cameo with French frame; Cameo by Giovanni Jacopo Caraglio (Italian; Parma or Verona ca. 1500/1505-1565 Krakow (?)); cameo ca. 1530-40; frame 19th century; Polish; Krakow cameo with French frame; Sardonyx; with inlaid gold and silver details; mounted in 19th century frame as a pendant in gold; with enamel; pearl and ruby; Overall: 2 13/16 x 1 3/4 in. (7.2 x 4.4 cm); Visible cameo: 31 x 22 mm