met-european-sculpture: Bona Sforza (1493–1557), Queen of Poland by Giovanni Jacopo Caraglio,
met-european-sculpture:Bona Sforza (1493–1557), Queen of Poland by Giovanni Jacopo Caraglio, European Sculpture and Decorative ArtsGift of J. Pierpont Morgan, 1917Metropolitan Museum of Art, New York, NYMedium: Sardonyx, with inlaid gold and silver details; mounted in 19th century frame as a pendant in gold, with enamel, pearl and ruby -- source link