Cleveland Museum of Art 128831 landscape Master G. Alpais (French) 1220–25 CC0 cma african-global-heritage sacred-art african global heritage sacred art byzantine crucifixion religious art mosaic gold leaf illumination christian art medieval eastern orthodox gold blue silver figures halo cross panel iconography plaque chasse for relics saint thomas becket Master G. Alpais (French) 1220–25 France, Limousin, Limoges, Gothic period, 13th century copper: gilded and engraved; champlevé enamel Enamel European Religious African & Global Heritage Sacred & Devotional