see more

The giant excavated hole left by the Mir mine, a former open pit diamond mine, sits in the ground beside city buildings in Mirny, Russia, on Tuesday, Nov. 12, 2013. OAO Alrosa, the world's largest diamond producer, raised about $1.3 billion in an oversubscribed share sale from investors including Oppenheimer Funds Inc. and Lazard Ltd.'s asset-management unit, First Deputy Prime Minister Igor Shuvalov said. Photographer: Andrey Rudakov/Bloomberg via Getty Images

The giant excavated hole left by the Mir mine, a former open pit diamond mine, sits in the ground beside city buildings in Mirny, Russia, on Tuesday, Nov. 12, 2013. OAO Alrosa, the world's largest diamond producer, raised about $1.3 billion in an oversubscribed share sale from investors including Oppenheimer Funds Inc. and Lazard Ltd.'s asset-management unit, First Deputy Prime Minister Igor Shuvalov said. Photographer: Andrey Rudakov/Bloomberg via Getty Images