Image taken Friday Jan. 18, 2014 and made available by Petra Diamonds of a 29.6 carat blue diamond which was recovered at the Cullinan Diamond Mine near Pretoria, South Africa. The stone is described as being of a vivid blue with extraordinary saturation , tone and clarity, and has the potential to yield a polished stone of great value and importance. (AP Photo/Philip Mostert – Petra Diamonds)
