Petra Diamonds and Trans Hex look the most obvious contendors to buy the Finsch diamond mine but De Beers could find these negotiations a lot tougher than those over the sale of its Cullinan mine.
Actress Mia Farrow and her agent will testify in August about a blood diamond given to model Naomi Campbell by Charles Taylor, Liberia's former premier, now up for war crimes.
De Beers said it had received interest in its Finsch and Namaqualand Mines, both situated in the Northern Cape.
De Beers has guaranteed about 56% of the preference shares held by Ponahalo Investments in an effort to stop its R3.7bn, 2006 empowerment transaction from collapse.
De Beers CEO, Gareth Penny, ended a five year reign at the helm of the diamond group on Friday even as it unveiled a doubling in pretax earnings, an 84% increase in sales and a doubling in production.
Rough diamond prices could pull back 5% to 10% in the short-term but the medium-to-long term outlook remains good because of the forecast shortage in supply.
Petra Diamonds declared that for the year ended June it enjoyed "a highly progressive year" helped by a moderate increase in production and much higher prices for gems.
Australian and JSE listed diamond exploration company Tawana Resources has completed the placement of 66 million shares at 1 cent per share to raise A$660 000.
Amid rising diamond prices, London-listed GEM Diamonds said it hoped to meet full year production targets at its flagship Letseng mine in Lesotho.
Mid-tier diamond producer Rockwell Diamonds has reported a 118% increase in first quarter revenue from rough diamond sales to C$8.5m from C$3.9m previously.