Diamonds Are The Hardest Known Natural Material.

Only hydrogen, helium and oxygen are more common.

Andre Geim and Konstantin Novoselov isolated it in 2004 and won the 2010 Nobel Prize in Physics.

The soccer-ball-shaped molecule of 60 carbon atoms won its discoverers a Nobel Prize in 1996.

It compares the remaining radioactive carbon in once-living material to a known baseline.