"Natural Gemstones" by Geological Survey is a guide that dives into the fascinating world of gems, explaining how they're sorted into precious and semiprecious groups and the different geological settings, from pegmatites to riverbeds, where these sparkling stones come to life. The book is a resource for gem enthusiasts and collectors. It touches on the different kinds of minerals, how gems are made deep in the earth, and important features like how hard they and their density. Readers can learn about gemstones made from living things, how gemstones are valuated for sale, and get advice on being a smart buyer, including how to tell real gems from lab-created ones.
Natural Gemstones
By Geological Survey (U.S.)
Uncover the mysteries of Earth's sparkling treasures, from their formation in geological environments to navigating the market, to become a savvy treasure hunter.
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2015-01-16
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About the AuthorThe United States Geological Survey (USGS), founded as the Geological Survey, is an agency of the U.S. Department of the Interior whose work spans the disciplines of biology, geography, geology, and hydrology. The agency was founded on March 3, 1879, to study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The agency also makes maps of extraterrestrial planets and moons based on data from U.S. space probes.
The United States Geological Survey (USGS), founded as the Geological Survey, is an agency of the U.S. Department of the Interior whose work spans the disciplines of biology, geography, geology, and hydrology. The agency was founded on March 3, 1879, to study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The agency also makes maps of extraterrestrial planets and moons based on data from U.S. space probes.
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