Africa's second-largest copper producer said late last month that it would introduce new mining duties and increase royalties to help bring down mounting debt.
Emerald Mining News
Back in June, the site was overrun by a mob estimated at between 300 and 500 people
The coloured gemstone sector has no system, globally at scale, that allows gemstones to be confidently traced from mine to market.
The global economy is booming and demand for precious jewels, particularly colored gemstones, has never been higher.
Workers search for the precious gems in the Minero river and the Real mine.
Emerald producers are looking for a Halle Berry, Charlize Theron or Jennifer Aniston type.