Traditional diamond mining is fraught with problems, from worker exploitation to deforestation and water pollution.

A startup called Aether is turning CO2 from the atmosphere into something new: the world’s first carbon-negative diamonds.

As hard as diamond and as flexible as plastic, highly sought-after diamond nanothreads would be poised to revolutionize our world.

A California couple visited a state park in Arkansas and made an amazing discovery -- a massive 4.38-carat diamond.