Anglo American CEO Cynthia Carroll has been named as the chairman of diamond company De Beers.
It comes just weeks after Anglo announced it had acquired an additional 40%shareholding in the company, taking its stake to 85%.
Under the original terms of the agreement, Anglo paid $5.2 billion in total for the acquisition.
Now Carroll has been appointed to lead the company.
Two more members of Anglo's management have also been appointed to the De Beers board.
Brian Beamish, the group director of mining and technology, and Peter Whitcutt, the group director of strategy and business development, will join the board.
Following her appointment, Carroll said she was "honoured to accept the role of chairman.
"Anglo has been a shareholder in De Beers since 1926, and this shared history between Anglo American and De Beers has given me a deep appreciation for the business and the unique nature of diamonds. I look forward to leading the board and continuing to support the management."
De Beers CEO Philippe Mellier added that the company is "fortunate to have a chairman of Cynthia's calibre, and to add Brian and Peter's extensive industry experience to the board".
All three appointments will take effect immediately.