Gold is a chemical element in the periodic table that has the symbol Au (from the Latin aurum) and atomic number 79. A soft, shiny, yellow, dense, malleable, ductile (trivalent and univalent) transition metal, gold does not react with most chemicals but is attacked by chlorine, fluorine and aqua regia. The metal occurs as nuggets or grains in rocks and in alluvial deposits and is one of the coinage metals. For millennia gold has been used as money, a store of value and in jewelry. Modern industrial uses include dentistry and electronics. Gold forms the basis for a monetary standard used by the International Monetary Fund (IMF) and the Bank for International Settlements (BIS). Its ISO currency code is XAU. It is the most malleable and ductile metal known; a single gram can be beaten into a sheet of one square meter, or an ounce into 300 square feet. Gold readily forms alloys with many other metals. These alloys can be produced to increase the hardness or to create exotic colors. Adding copper yields a redder metal, iron blue, aluminium purple, platinum metals white, and natural bismuth together with silver alloys produce black. Native gold contains usually eight to ten per cent silver, but often much more — alloys with a silver content over 20% are called electrum. As the amount of silver increases, the color becomes whiter and the specific gravity becomes lower. Gold is a good conductor of heat and electricity, and is not affected by air and most reagents. Heat, moisture, oxygen, and most corrosive agents have very little chemical effect on gold, making it well-suited for use in coins and jewelry; conversely, halogens will chemically alter gold, and aqua regia dissolves it. Common oxidation states of gold include +1 (gold(I) or aurous compounds) and +3 (gold(III) or auric compounds). Gold ions in solution are readily reduced and precipitated out as gold metal by the addition of virtually any other metal as the reducing agent. The added metal is oxidized and dissolves allowing the gold to be displaced from solution and be recovered as a solid precipitate. Recent research undertaken by Frank Reith of the Australian National University shows that microbes play an important role in the formation of gold deposits, transporting and precipitating gold to form grains and nuggets that collect in alluvial deposits. Pure gold is too soft for ordinary use and is hardened by alloying with silver, copper, and other metals. Gold and its many alloys are most often used in jewelry, coinage and as a standard for monetary exchange in many countries. Gold is measured in karats (k), when selling it in the form of jewlery. Pure gold being 24k, however, gold is more commonly sold in 20k, 18k, and 14k. The lower the "k," the more copper or silver that has been mixed into the gold. Gold is most commonly mixed with copper. Because of its high electrical conductivity and resistance to corrosion and other desirable combinations of physical and chemical properties, gold also emerged in the late 20th century as an essential industrial metal. The gold price is rising everyday. Please go to the Live Gold Chart page and Gold Historical Chart Pages(30 Day,60 Day, 6 Month, 1 Year).
1)The most expensive gold coin in the world.
One of the world's rarest and most sought after collector coins, the 1933 Double Eagle, was sold at Sotheby's auction house in New York on Tuesday 30th July 2002 for the record sum of $7.59 million.
See the Gold Price amplitude during the last year.
2) A Solid Gold Winner
The World Cup Trophy is 32cm high and is made of solid 18-carat gold.
3) Gold doors to a bank in Oman
There is a bank in Oman which has gold doors.
4) Recycling of gold
Today, at least 15% of annual gold consumption is recycled each year.
5) The first known piece of gold jewellery
In Egypt, gold jewellery and other artefacts have been found in Pharoah's tombs dating to around 1500 BC and later.
6) Most famous piece of gold
This has to be the face mask of the boy-king of Egypt (1361-1352 BC), Tutankhamun discovered in his tomb in 1922 by Howard Carter.
7) Famous films about gold
There are many examples of films centred around man's greed for gold - for example the James Bond film, Goldfinger, starring Sean Connery, the Italian Job, starring Michael Caine, the Maltese Falcon and the Lavender Hill Mob.