Artist: Enamel on reverse after a design by Étienne Delaune (French, Orléans 1518/19–1583 Strasbourg) Date: ca. 1550–60, back: 19th century Medium: Chalcedony, mounted in gold with enamel, rubies, emeralds, diamond, and pearl Accession: 17.190.907 On view in:Gallery 544