"Tune into the mysterious powers of the Earth with this invaluable guide to crystals and gemstones. With everything you need to know about this exciting branch of witchcraft, this is a must-have for every girl who's ready to explore the hidden magic of the universe--and discover the dazzling power of crystals!"--Back cover.

Xanna Eve Chown is a versatile author of books for both children and adults. She has trained as a tarot reader and was the author of a monthly Tarot column in Prediction magazine for ten years. She is also an established fiction author, and has contributed many stories to Big Finish's series of Doctor Who audio plays. She lives in Brighton.

Emily Anderson is a writer and editor who has extensive experience of writing on esoteric subjects, including crystals. She has worked for spiritual lifestyle magazines including Kindred Spirit and Spirit & Destiny, on which she was part of the features team for ten years. She also conceived and edited Spirit & Destiny's Soul Secrets, a compilation of wisdom from over 70 different experts and pioneers in the mind, body and spirit field. She lives in West Sussex with her two sons.

Luna Valentine is a Polish illustrator living in Nottingham, United Kingdom. At Nottingham Trent University, she studied graphic design and went on to finish a master's in illustration. When she's not drawing, Luna loves to spend time with her animals, a good book, and a cup of tea.