Cunningham's Encyclopedia of Crystal, Gem & Metal Magic by Scott Cunningham is a comprehensive reference book that delves into the world of crystals, gemstones, and metals in the context of magic and spiritual practices. Published by Llewellyn Publications in 1993, this first edition trade paperback features informative content on crystals, folklore, mythology, and magick studies. With 216 pages filled with practical information and illustrations, this book serves as a valuable resource for those interested in exploring the mystical properties of crystals and gemstones.