Silver brooch with a glass, Dura Europos, Roman Syria [d/b]

Silver and glass brooch / pendant found in Dura Europos
5 x 8.8 cm
Period: Graeco-Roman or Parthian
Yale-French Excavations at Dura-Europos
In the Yale Art Museum, inv. no. 1929.403 https://artgallery.yale.edu/collections/objects/3544