Blue, red agate, emeralds, diamonds and jadeite, gold, the most important gems that are extracted and sold and exchanged. A lot of precious metals are considered a rich source of the human person, and sometimes a measure of the level of living and riches, it is the rarest kinds of precious stones in the world possesses a must and it is one of the richest men in the world. In our article we will talk about one of the most important of these metals, namely the (gold). Gold is a precious metal, one of the types of metals and chemical element symbol (Au), and the atomic number is 79, a soft metal and shiny, and is yellow in color, it has been used since ancient times as a kind of mutual exchange between people and the merchants. There is gold in nature in the river bottoms in the form of granules, also located inside the rocks, or they may be found in the form of veins within the Earth's interior, which is usually found with other metals as metal copper, or lead, an advantage Benahumich, chemical and density, lack you eat, has the largest bloc of gold was discovered in 1896 in Australia. The extract gold from the ground and from the veins rock gold-bearing, is found in abundance in the United States as a state of California, and the state of Dakota, and Alaska, as there are in South Africa, and in the west Osturabia, and in Ontario, Canada, and in the Urals, but the (rand ) in South Africa accounts for forty percent of the proportion of gold production in the world. Gold is nowadays the task of monetary base in the whole world, the coins it handles the International Monetary Fund basis, and the Bank for International Settlements. The gold and many other uses. In an earlier time was the pharaohs use it in making Twabathm, and their vehicles, and persuaded them Calveron (Tutankhamen), and because of its distinctive characteristics Cleonth, ease of dragging and composition, effective against corrosion and resistance, it can be mixed with other chemical elements such as copper, and silver, to get the solid alloy, mixed with platinum as well, and as a result it can be used in the manufacture of jewelery and precious jewelry fine, which is what is known in gold (yellow) which is mixed with copper, silver, and zinc, as well as white gold mixed with Albuladion, and tin. Gold is not limited to use in the field of jewelry and coins only, it has been discovered magical effectiveness in dental treatment, it is Lin metal resistant to corrosion, and is also used in the treatment of bone infections, and arthritis, rheumatism and chronic diseases, and some cancers. The funny thing that this precious metal enters in the preparation of certain foods, drinks, and desserts.
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