Diamond is made up of carbon. Carbon that has been subject to extremely high pressure and heat for a long time becomes diamond. The longer the carbon is exposed to such conditions, the larger the diamond that will be formed. Over millions of years, carbon deposits slowly crystallize into diamond.
A natural place where the extreme conditions needed to form diamonds exist is deep inside the Earth. At some 90 miles or 150 kilometers under the continental crust, the pressure is known to be around 5 gigapascals and the temperature around 2,200 degrees Fahrenheit or 1,200 degrees Celsius.
Natural diamonds are brought to the surface of the Earth by volcanic emission. The hot molten lava cool down and solidifies into rock within which diamonds can be found.
How the name 'diamond' came to be
The name "diamond" has been traced back to the Greek word "adamas", which was a literal description for the hardest substance known, but more subtly means indestructible. It is no wonder that diamond remains as the ultimate symbol for prestige, power and passion.
How diamond came to be associated with weddings
A celebrated early account of the exchange of a diamond engagement ring is that between the Emperor of Hapsburg (today's Austria) and his wife, Mary in 1477.
According to Egyptian beliefs and Christian records from Seville (in Southern Spain), the ring finger (next to the last little finger) of the left hand has a vein that runs straight to the heart. Hence, the diamond ring is always worn on this particular finger.
For more information on diamonds, please visit http://howdiamondsform.blogspot.com
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