Banner of Light - a flag from The Wheel of Time
Described in Chapter 20 of The Fires of Heaven as "brilliant red with the white-and-black symbol of the ancient Aes Sedai at its centre". The symbol consists of the Flame of Tar Valon (described in The Wheel of Time Companion as  "a white teardrop with the point upward")  on the left, and the Dragon's Fang (described in The Wheel of Time Companion as "black, in the shape of a teardrop balanced on its point") on the right.
Vectorised by  Begoon from the description by Robert Jordan