By one estimate, “lab-grown diamonds” make up a $14 billion market. And the world’s largest jewelry maker, Pandora, is betting that that market will only grow. Pandora says it will stop selling mined diamonds and is expanding its lab-grown diamond range. The brand says growing diamonds in a lab is more environmentally sustainable than mining, and also happens to be more affordable, thanks to cost-effective production methods. The BBC’s Leanna Byrne has more on how lab-grown diamonds are made and who’s buying them.