Published Wednesday, February 19, 2014 5:25 PM

http://gemstone.org/index.php?option=com_content&view=category&layout=blog&id=43&Itemid=43

The Cullinan mine was acquired by Petra Diamonds in 2008. Other notable diamonds discovered in the mine is the 3,106 carats Culinan Diamond in 1905- described as the largest rough gem diamond ever recovered; and a 25.5 carat blue diamond in 2013 - sold for $16.9 million.

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