Catoptromancy

Catoptromancy is a method of Divination that relies on the reflections of mirrors to see presages of a person's future. Ways to practice catoptromancy presumably includes the use of a scrying mirror, or a psychomanteum.

Janus Galloglass, a mirror shop in Diagon Alley, sold catoptromancy implements.

Appearances

 * Harry Potter and the Philosopher's Stone