Gold

It was in 1848, that James W. Marshall first foundGold is a metal that doesn't tarnish or corrode and is
traces of gold in the water of the American Riverfound in nature as pure gold; there is no need for
while building a sawmill for Captain John Sutter. He bitsmelting or refining gold from its ore for its usage.
the metal and tested it in many ways and confirmedAs gold is very reflective, it is used to protect
that it was indeed gold. He tried to keep it a secret, butspacecraft and satellites from solar radiation and in
word spread quickly, triggering the California Gold Rushindustrial and medical lasers for focusing light energy.
of 1849.The purity of gold is measured using the term carat,
It is hard to believe, but gold is a very rare substancewhich is based on a total of twenty-four parts. Pure
consisting of only five ten-millionths of the Earth's outergold is known as twenty-four-carat gold, while
layer. Gold is a metal, a good conductor of heat andeighteen-carat gold has eighteen parts gold, and the
electricity, and is solid at room temperature. It is aother six parts are of another metal like silver and
malleable and ductile element, making it very useful forcopper.
use in jewelry and electronics. As gold is soft, it is alsoGold is bought and sold practically every day in the
used for filling cavities in teeth and as gold teeth. It isworld in the form of gold bars, gold coins, and gold
beaten into sheets less than one-tenth of a millimeterjewelry. The gold price is fluctuates greatly and
thick for use in lettering on honor rolls in school or forchanges according to the demands of the buyers. The
putting gold in picture frames and ornaments.gold price is always listed with different prices on the
Comparing its weight with water, it is over nineteennewspaper, as different markets of the world have
times heavier than water and twice as heavy as lead.different prices.