Gold (Au) is a rare and attractive metal.  Humans have valued it for millennia.  Natural gold principally occurs as detrital grains and clasts in streams, rivers, or beaches (= placer deposits); and in hydrothermal veins, usually mixed with quartz.
<p>Historic and current uses of gold include: jewelry, coins, electronics, dentistry, and government hoards.
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This vintage gold tooth (= molar) dates to the 20th century.  It is ~1.2 centimeters across at its widest.
James St. John
CC BY 2.0
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