Aim-listed BlueRock Diamonds sold three higher-value gem-quality diamonds for $180 000 as part of its November tender. The 6.5 ct, 7.6 ct and 7.6 ct diamonds were recovered at BlueRock’s Kareevlei diamond mine, in the Kimberley region of South Africa, and sold for $53 000, $61 000 and $67 000, respectively.