Open pit mining at Williamson in Tanzania

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Diamond Sales

Petra sells all rough diamond production by the method of open tender.

Petra’s South African production is sold in Johannesburg and its Tanzanian production is sold in Antwerp.

The process from mine to market is as follows:

  • Diamonds are cleaned and placed into international sales assortments according to a number of criteria (incl. size, colour, clarity, expected value)
  • Individual mine production is kept separate, providing buyers with an additional level of knowledge about the goods they are purchasing based upon each mine’s unique diamond characteristics
  • Tenders last between four to six working days, during which participants view the assortments and place a confidential electronic bid on the parcel of their choice
  • At the end of the tender, the highest bidder wins the parcel

For enquiries related to diamonds sales, please contact:

Greg Stephenson
Marketing Manager
Tel: +27 83 637 9849

Johannesburg office
Tel: +27 11 334 0962
Antwerp office
Tel: +32 488 622 570