Dunwich's Guide to Gemstone Sorcery by Gerina Dunwich is a practical guide for modern witches on using precious and semiprecious stones for magick, divination, and healing. It covers cleansing, charging, and using stones to create amulets, spells, and elixirs for love, wealth, protection, and cursing/cures. The book emphasizes Pagan folklore, occult history, and practical ritual application. Note: This book is also published under the title "Gemstone and Crystal Magic: A Modern Witch's Guide to Using Stones for Spells, Amulets, Rituals, and Divination".