29.6-carat-vivid-blue-rough-diamond-discovered-at-petra-diamonds-cullinan-mine Published January 22, 2014 at 801 × 737 in 29.6-carat-vivid-blue-rough-diamond-discovered-at-petra-diamonds-cullinan-mine 29.6-carat, vivid-blue rough diamond discovered at Petra Diamonds Cullinan mine← PreviousNext →