How Much Pressure to Make a Diamond from Coal?

Answer

Natural diamonds are the hardest substance known to man. However, contrary to popular thought, they do not form from coal. Diamonds are formed from carbon-containing minerals, at pressure that only exists at depths of 87 to 120 miles in the Earth.
Q&A Related to "How Much Pressure to Make a Diamond from Coal?"
Coal is composed of organic molecules collected from the decomposition of ancient living organisms (e.g. plants, fungi) Although it does not naturally occur as a nearly carbon-pure
http://www.ehow.com/facts_7318475_coal-turns-diamo...
alot.
http://wiki.answers.com/Q/How_much_heat_and_pressu...
It takes the earth millions of years and millions of pounds
http://www.chacha.com/question/how-many-pounds-of-...
Coal does not create diamonds when compressed, that is a ludicrous statement!
http://answers.yahoo.com/question/index?qid=201105...
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There are three ways one can make diamond; Geological by taking carbon (coal), burrying it underground at very high temerature and high pressure and waiting a ...
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