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.
The fastest woman to ever run a marathon is Paula Radcliffe of Great Britain (2:15:25) at London 2003. The fastest man to run a marathon is Geoffrey Mutai of Kenya (2:03:02) a â¦ t Boston 2011.