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.
Fastest marathon dribbling two basketballs. Share. The fastest marathon dribbling two basketballs is 4 hr 10 min 44 sec and was achieved by Jerry Knox (USA) at the Virgin Money London Marathon in London, UK, on 26 April 2015. Jerry Knox's record was one of 34 records verified by GWR on the day of the 2015 Virgin Money London Marathon.