Within the more than 2,000 years of its exploitation, the mine delivered just 130 tons of diamonds. Since diamond-containing rock features only an average of 1/20,000,000 in diamonds, some 3 billion tons of rock, sand and boulders had to be processed in the Kimberley Mine – 1.8 tons for a single ct. Diamond is made of pure carbon (c), same as soot. This means that burned toast chemically equa…