Petra Diamonds at the December tender sold two "exceptional" white diamonds weighing 126.4 and 91.5 carats, gaining more than $ 12 million for them.
The group said that a 126.4 carat stone was sold for $ 8.52 million, and more a small 91.5-carat diamond went under the hammer for $ 3.78 million.
Both diamonds were mined at the Cullinan mine located in South Africa, they are classified as diamonds of type IIa - the highest quality and color characteristics that this mine is famous for.
"The high prices received on the sale of these exceptional stones from the Cullinan project inspire confidence and confirm the forecast