The fight for the $150 million emerald industry in Colombia

Colombia produces the world’s most expensive emeralds. The highest-quality stones can be worth tens of thousands of dollars per carat. Miners have fought over these treasures for centuries, but in the past decade, foreign investors have modernized and consolidated the industry. The newcomers have brought safety and new jobs to the area, but there’s little left over for the communities around the mines. So what happens when foreign investors take over a $150 million industry? And can local miners gain a piece of it back?