Clarity: Clarity assesses the internal characteristics of the diamond as it formed in nature. This C factor is graded on a 10-grade scale and also impacts the diamond's rarity and value.
The fastest marathon ever was run by Geoffrey Mutai (2:03:02) at the Boston Marathon on April 18, 2011. But because the legendary Boston course does not meet IAAF layout standards, the World Record belongs to Patrick Makau (2:03:38) recorded at the Berlin Marathon on September 25, 2011.
Asafa Powell from Jamaica is the fastest runner in the world. Jamaica's Asafa Powell poses next to the timer marking his world record run over 100 metres in Athens, Greece, yesterday (June 15, 2005). Powell clocked a time of 9.77 (9.74) seconds at the Olympic Stadium. Post last edited by gtho4 on Feb 13 2017.