Gregory of Nyssa , by byzantine mosaics , 1300 , religious painting, portrait , Byzantine, Late Byzantine/Palaeologan Renaissance (c. 1261–1453) style , from the series Pammakaristos Church, Istanbul, Turkey , Holy places
A mosaic of a man with a long beard on a wall.
A picture of an old man with a long beard is on a wall. The man is wearing a white shirt with black squares on it. There is a cross on the chest of the man. 