Muzo, Colombia – It is here where clouded forests overgrow the mountain slopes in which world’s most valuable emeralds are hidden. For much of history, Colombia has been the global provider of emeralds, though in the last decade it has given way to Zimbabwe and Brazil. In an attempt to organize mining and to not miss out on the profits of emeralds that often are smuggled out of the country, the government decided to formalize the sector in 2001.