Have the world in your hands with these compact, illustrated natural history guides From red beryls to rubies, pick through Nature Guide Gems, a beautiful guide to earth's most precious stones. Part of a new generation of compact natural history guides, Nature Guide Gems is packed full of stunning images that reveal the intricate details and unique characteristics of earth's treasured jewels and metals. Expertly written and including over 400 examples from across the globe, these guides will give you knowledge of the natural world at your fingertips. With a detailed introduction on identifying and classifying gems and 140 individual profiles with clear, informative descriptions of each type of stone, Nature Guide Gems is the ideal identification guide.