Pressures and high temperatures, a process of creation which has given life to gems of extraordinary beauty.
Diamonds, to be formed, have incorporated an extraordinary energy. The pure carbon, to aggregate its atoms in tetrahedral structure and composition of the diamond, was subjected to pressure between 50 and 65 thousand atmospheres, and at temperatures between 900 and 1,200 degrees. In other conditions it simply becomes graphite.
Diamonds have been formed to 200 km in depth, 2.5 million years ago. Their name originates from two Greek terms: adamas (indomitable) and diaphanes (transparent).