The world's biggest diamond has been found in a mine in South Africa's northwest province.
According to SAfm public radio the stone found was twice the weight of the previous record-holder, the Cullinan Diamond, which weighed about 3,106 carats when found in present-day Gauteng province in January 1905.
The Cullinan was cut into several smaller stones, which now adorn the British crown jewels.
The stone was to be transported to Johannesburg under tight security, Safm said. No further details were immediately available.
The De Beers Group dominates diamond mining in South Africa.