Exotic Gems: How to identify and buy alexandrite, andalusite, chrysoberyl cat's eye, kyanite, common opal, fire opal, dinasaur gembone, tsavorite, rhodolite & other garnets

Book excerpt: This is a full-colour guide to identifying and evaluating alexandrite, andalusite, chrysoberyl, cat's-eye, kyanite, sillimanite, common opal, fire opal, dinosaur gembone, tsavorite, rhodolite, spessartine, demantoid, malaya, grossular.and other garnets. This is the second in a series of books that explores the history, lore, properties, qualities and geographic sources of lesser-known gems. The book shows you with close-up photos how to make visual judgements about clarity, transparency, colour, cut quality and brilliance. It also provides tips on gem care and on detecting imitations and gem treatments. The healing and metaphysical properties of the gems are also addressed. Written for both consumers and professionals, it's easy to read, well-organised, packed with professional colour photographs and full of fascinating information.