Huge Diamond Found in Africa - 478 ct.

A huge diamond was unearthed in the southern African nation of Lesotho last month. According to the company that found it states that this could yield one of the largest and highest quality round polished diamonds. Experts in Antwerp, Belgium who analyzed the 478-carat stone determined it to be of the highest color grading available for a white diamond.

It's a D color, which is the highest possible graded color you can get, and is believed there is a chance -- a very good chance -- of getting a 100-carat plus" round stone with the highest color and clarity rankings from this stone.

Two bigger stones -- 603 and 493 carats -- were found in the same mine in 2006 and 2007, respectively. A 601-carat diamond was mined here only in 1960.