Natural Gemstones

Natural Gemstones

By Various
Book Description
Table of Contents
  • Natural Gemstones
  • Natural gemstones
    • Geologic environment
    • Gemstones occur in most major geologic environments.
    • Mineral gemstones
    • Birthstones
    • Organic gemstones
    • Buyer beware
    • Since 1935, the mining of gemstones in the United States has been almost entirely a recreational activity of mineral collectors and hobbyists.
    • The 1990 U.S. output of natural gemstones was primarily from Tennessee, California, Arizona, Arkansas, Montana, Nevada, and Maine.
    • Gemstones: Value of U.S. production vs. imports, 1986 and 1989[1]
    • Except for the few gem diamonds found each year in Arkansas, U.S. diamond production is very low.
    • World diamond reserves are estimated to be about 300 million carats, including near-gem materials but not diamonds of abrasive quality.
    • Chemical formulas of gemstones
    • Some ways to contact a local rock, mineral, or gem club
    • Role of the U.S. Geological Survey (USGS)
    • Selected general references
    • Acknowledgments
    • Photographs
  • Transcriber’s Notes
    No review for this book yet, be the first to review.
      No comment for this book yet, be the first to comment
      You May Also Like
      Also Available On
      App store smallGoogle play small
      Curated Lists
      • Pattern Recognition and Machine Learning (Information Science and Statistics)
        by Christopher M. Bishop
        Data mining
        by I. H. Witten
        The Elements of Statistical Learning: Data Mining, Inference, and Prediction
        by Various
        See more...
      • CK-12 Chemistry
        by Various
        Concept Development Studies in Chemistry
        by John Hutchinson
        An Introduction to Chemistry - Atoms First
        by Mark Bishop
        See more...
      • Microsoft Word - How to Use Advanced Algebra II.doc
        by Jonathan Emmons
        Advanced Algebra II: Activities and Homework
        by Kenny Felder
        See more...
      • The Sun Who Lost His Way
        Tania is a Detective
        by Kanika G
        See more...
      • Java 3D Programming
        by Daniel Selman
        The Java EE 6 Tutorial
        by Oracle Corporation
        See more...