Jewish ceremonial wedding ring, from the Colmar Treasure, ca. 1300 –before 1348. Gold, opaque and translucent enamel, 1 3/8 x 7/8 in. (3.5 x 2.3 cm). Musée de Cluny – Musée national du Moyen Âge, © RMN-Grand Palais / Art Resource, NY. For more than 500...