This icon was the Imperial standard of Constantinople and was paraded along the walls and carried into battle by emperors. Crusader loot - it's now in Venice
Image Gallery of Mosaics in Hagia Sophia
Here's s page of wonderful images of the great mosaic icon of Christ in the upper gallery of Hagia Sophia - otherwise known as Saint Sophia.
Imperial Bedroom
Portrait Hall
Mauve Room
Maple Room
Aleksey's Bedroom
Nicholas's Study
Aleksey's Playroom
Formal Reception
Balcony View
Aleksey- Balcony
Children-Mauve
Nicholas's Bathroom
Alexandra- Mauve
Nicholas's Reception
Tsarskoe Selo Map