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The psychomanteum was a specialised room used in the practise of catoptromancy.[1][2] It was an enclosed, dimly-lit space outfitted with a mirror, which was angled in such a way that it reflected nothing but darkness.[1]

Janus Galloglass, a mirror-maker in Diagon Alley, had a psychomanteum that its patrons could use.[2]

Appearances

Notes and references

  1. 1.0 1.1 "Psychomanteum" on Wikipedia
  2. 2.0 2.1 Illustration of Diagon Alley by Jim Kay from the Deluxe Illustrated Slipcase Edition of Harry Potter and the Philosopher's Stone (see here).