Diamond Formation

The word "Diamond" comes from the greek word "Adamas", which means indestructible. It is the only gem known to man that is made of a single element, Carbon, besides graphite. Diamond form between 120-200 kms or 75-120 miles below the earth's surface where we have extremely high temperature and pressures. According to geologists the first delivery of diamonds was somewhere around 2.5 billions years ago and most recent was 45 millions years ago.
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