It takes intense pressure and temperatures north of 2,000 degrees for a diamond to form deep within the Earth. But these days, there’s another way to create a diamond: in a lab, where a diamond can go ...

In the blazing midday sun, the yellow egg-shaped rock stood out from a pile of recently unearthed gravel. Out of curiosity, 16-year-old miner Komba Johnbull picked it up and fingered its flat, ...