Denver Gold and Silver Exchange
600 South Holly Street Suite 103
Denver, Colorado 80246
303-322-7345 800-830-8660
We buy broken Jewelry and Coins.
Get Cash for Gold, Silver, Platinum
We buy Gold Jewelry, Broken Jewelry or Unwanted Jewelry,
Rings, pendants, knotted kinked or broken chains, out
of style earrings, and any other used jewelry. Turn
Gold into Cash!
Gold
is a chemical element with the symbol Au (from Latin:
aurum "gold") and an atomic number of 79. Gold
is a dense, soft, shiny metal and the most malleable and
ductile metal known. Pure gold has a bright yellow color
and luster traditionally considered attractive, which
it maintains without oxidizing in air or water. Chemically,
gold is a transition metal and a group 11 element. With
exception of the noble gases, gold is the least reactive
chemical element known. It has been a valuable and highly
sought-after precious metal for coinage, jewelry, and
other arts since long before the beginning of recorded
history.
Gold resists attacks by individual acids, but it can be
dissolved by the aqua regia, so named because it dissolves
gold. Gold also dissolves in alkaline solutions of cyanide,
which have been used in mining. Gold dissolves in mercury,
forming amalgam alloys. Gold is insoluble in nitric acid,
which dissolves silver and base metals, a property that
has long been used to confirm the presence of gold in
items.
The native metal occurs as nuggets or grains in rocks,
in veins and in alluvial deposits. Less commonly, it occurs
in minerals as gold compounds, usually with tellurium.
Gold standards have been the most common basis for monetary
policies throughout human history, being widely supplanted
by fiat currency only in the late 20th century. Gold has
also been frequently linked to a wide variety of symbolisms
and ideologies. A total of 165,000 tonnes of gold have
been mined in human history, as of 2009.[1] This is roughly
equivalent to 5.3 billion troy ounces or, in terms of
volume, about 8500 m3, or a cube 20.4 m on a side. The
world consumption of new gold produced is about 50% in
jewelry, 40% in investments, and 10% in industry.
Besides its widespread monetary and symbolic functions,
gold has many practical uses in dentistry, electronics,
and other fields. Its high malleability, ductility, resistance
to corrosion and most other chemical reactions, and conductivity
of electricity lead to many uses of gold, including electric
wiring, colored glass production and even gold leaf eating.
