This pendant jewel depicts Prudentia (Prudence), one of the seven virtues, with her traditional attributes: a diamond mirror (which endows her with knowledge of the past, present and future) and a serpent (the all-knowing serpent of earthly paradise). The head and arms are made from chalcedony (a valuable hardstone) and originally formed part of a 'commesso' (a cameo combined with enamelled gold and gemstones) made in 16th-century France. At a later time, the chalcedony pieces have been reassembled and set into a gold and enamel pendant. Damage to her left arm has been disguised with a silver bracelet. The quality of the enamelling is fine and the diamond 17th century.