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A beautifully illustrated, entertaining, and educational guide to the world's crystals, rocks, gemstones, and other geological phenomena from the acclaimed author of What We ...
World-renowned gemmologist, Helen Molesworth traces the journey of gems, showing how their remarkable stories are a sparkling new way of exploring the history of humanity ...
Understanding gemstones in a geological context
Gemstones are colorful treasures of the Earth that have captivated humans for thousands of years. The physical and chemical ...
Have the world in your hands with these compact, affordable, illustrated natural history guides Did you know culinary salt is the mineral halite? Or that ...
