The pendentives feature four unidentical angel figures. It is believed that these one headed six winged angels (seraphim) protect the Lord’s Throne in Heaven. The angels featured in the East are composed of mosaics whereas the two in the West have been damaged during the Eastern Roman period and have been renewed as fresco.
The faces of the angel figures featured on the pendentives were covered up with star shaped metallic lids during the Ottoman period. During the mosaic renovations in 2009, the lids covering the angel figures’ faces were opened and revealed.