This Late Roman gem shows the Adoration of the Magi, which Evans used as a comparison for the Thisbe ring. Evans bought it in Naples.
Bibliography
Evans, Arthur. 1935. The Palace of Minos at Knossos, IV, pp. 474-475, fig. 330
Myres, John (ed.). 1936. British Archaeological Discoveries in Greece and Crete 1886-1936, p. 32