Natural Gemstones by Geological Survey
(7 User reviews)
1487
Geological Survey (U.S.)
English
"Natural Gemstones" by Geological Survey is a scientific publication likely written in the late 20th century. The book provides an overview of natural gemstones, discussing their classification as precious or semiprecious, as well as the geologic environments in which they form. It serves as a comprehensive resource for collectors, hobbyists, and a...
descriptions of different types of minerals, their formation processes, and specific properties such as hardness and specific gravity. It explains the various geological environments where gemstones are found, such as pegmatites and stream gravels, highlighting that these natural treasures are often rare and scattered. Additionally, the publication provides insights into organic gemstones, gemstone valuation, and tips for prospective buyers to navigate the market wisely, especially concerning synthetic gems. The book acts as an essential guide for amateur gemologists and collectors looking to deepen their understanding of the world of gemstones. (This is an automatically generated summary.)
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Matthew Thomas
1 month agoFrom a researcher's perspective, the critical analysis of current industry standards is very timely. Thanks for making such a high-quality version available.
Margaret Allen
1 year agoSurprisingly enough, it manages to explain difficult concepts in plain English. I learned so much from this.
Sarah Garcia
1 year agoAfter hearing about this author multiple times, the depth of research presented here is truly commendable. This story will stay with me.
Matthew Allen
4 months agoComprehensive and well-researched.
John Davis
1 year agoSolid information without the usual fluff.