Crux gemmata
…force of the opposite persuasion, who helped to popularize images of Christ on the cross. In so-called "mystical" images, such as the apse mosaic at the Basilica of Sant' Apollinare in Classe, Ravenna (549), the jewelled cross stands specifically as a symbol for Christ. A poem by St Paulinus of Nola allows a reconstruction of a mosaic apse…