In The Encyclopedia of Crystals, Judy Hall draws on over 30 years' experience of working with crystals to provide the definitive reference. Lavishly illustrated, featuring newly discovered stones and providing new materials on geology and fluorescent properties, this is an essential addition to the libraries of everyone working with crystals. Organized by crystal color for easy reference, this gorgeous guide relates the colors of crystals to the chakras, tells readers how to cleanse and activate them, and provides helpful, authoritative advice on healing with crystals.