In recent years, minerals and gems have enjoyed growing renown and
popularity. At this time there are some 3,800 different minerals
known from all parts of the world that have been deep in the earth
for millions of years and grew there over thousands of years. Learn
to identify the most important groups of minerals, including
quartz, feldspar, beryl, tourmaline, corundum, diamond, garnet,
spinel, fluorite, precious metals, and more. More than 150 photos
with descriptions relate how minerals originate, are found, and
what they signified in ancient times.
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