Patrice Motsepe, $2.9 billion
South African. Mining
Motsepe made global headlines in February when he signed up to join Bill Gates’ and Warren Buffett’s Giving Pledge, announcing that he will give away half the income generated from assets owned by his family to the Motsepe Family Foundation. South Africa’s first and only black billionaire holds the bulk of his fortune through African Rainbow Minerals (ARM), His publicly traded mining conglomerate, which has interests in platinum, nickel, chrome, iron, manganese, coal, copper and gold. He also holds a stake in Sanlam, a publicly traded financial services company outside Cape Town.