A mysterious black diamond stumped experts for years until one Belgian cutter invented a new machine to shape the 612-carat ...

The world's second largest diamond could soon find a new home in a museum or a sheikh's collection -- but first needs to be properly evaluated, the Belgian firm holding it told AFP Monday. Unearthed ...

An amateur rock collector recently hit the jackpot while exploring a state park in Arkansas. David DeCook, a Minnesota resident, unearthed a stunning 3.81-carat brown diamond at the Crater of Diamonds ...

The dazzling Motswedi diamond, the world’s second-largest gem, could soon dazzle visitors in a sheikh’s private museum once its true worth is assessed. Discovered in Botswana last year, the colossal 2 ...

Queen Elizabeth owned a dazzling brooch cut from the world’s largest diamond. The Cullinan III and IV brooch has an estimated worth of between £50 and £180 million. Elizabeth inherited the diamonds ...

CANADA -- A giant 552-carat yellow diamond was discovered in a mine located in Canada's Northwest Territories. Dominion Diamond Mines owns 40 percent of the mine where the diamond was found and said ...

Nothing says love like a diamond, especially a stunning blue diamond that's now up for auction. Feast your eyes on the largest flawless vivid blue diamond in the world. Weighing 13.22 carats, the ...

The bidding did not reach the unspecified reserve price. — -- After much admiration and anticipation, the world’s largest uncut diamond failed to sell at a public auction Wednesday night. The ...