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

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


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).
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