Diamond is produced as a result of tremendous heat and pressure within the earth's surface. Recent research has suggested that a temperature of 690°F would be required, together with a pressure of 70,000kg to a square centimetre. Such conditions would only be found at a depth of some 120 miles below the earth's surface. Diamond is then brought to the surface as a result of volcanic activity; all this happened between 75 and 120 million years ago.
Sunday 26 October 2008
Subscribe to:
Post Comments (Atom)
0 comments:
Post a Comment