Judy Hall

The Crystal Bible catalogues several hundred stones with photographs, and lists for each one the conditions it is said to address, physical, emotional and spiritual.

Hall worked as an astrologer and past-life therapist and wrote across that whole field for decades. Her volumes are organised well enough to serve as reference works inside the tradition.

There is no evidence that crystals affect any medical condition, and the claims in the book are not framed as testable. Read as a compendium of a belief system rather than as health guidance, particularly the sections listing stones against named illnesses.