Explore the treasures of the Earth with this guide to rocks and minerals, including crystals, gemstones, and fossils - ideal for every rockhound and budding gemmologist.From primeval origins to their astonishing modern-day uses and appeal, this is the ultimate portrait of Earth''s geological riches - rocks, minerals, crystals, and gems. Also included is a look at other precious materials often prized for their beauty, such as amber, coral, ivory, and fossils.Learn how to identify more than 450 rock and mineral specimens through stunning photographs and detailed characteristics. Discover more about rocks and minerals through the folklore and historical artefacts, and find out the fascinating stories behind the world''s natural treasures, including the Hope diamond and the Great Mogul emerald. Plus, pick up practical advice on rock and mineral collecting, including how to cut, polish, and display your finds.Rocks and Minerals was produced in association with the Smithsonian Institution in Washington DC, the world''s largest museum complex, ensuring the guide''s accuracy.