Ariana Grande doubles her number of diamond-certified singles, as "7 Rings" joins "Bang Bang" in the club of tracks that have moved 10 million units in the U.S.

From a Persian prince to the American “jeweler to the stars,” the world’s largest cut blue diamond has a lengthy history.

Despite industry claims, there are few controls to prevent diamond sales from financing violence and abuse around the world.

DeBeers is learning the hard way. Diamonds are not forever. The miner, owned by the multi-national, Anglo American, has been ...