The Kagem emerald mine is the world’s single largest producer of emeralds and accounts for approximately 25% of global emerald production. It covers an area of approximately 41 square kilometres and is located in the central part of the Ndola Rural Emerald Restricted Area (“NRERA”), in the Copperbelt Province of Zambia.
Kagem is an open-pit emerald mine. The operation currently runs to as much as 130 metres in depth (imagine the height of an +40 storied office block), is 1.5km in length and approximately 750 metres wide.
Kagem has built a reputation in Zambia as a world-class emerald mine and boasts a safety record to match. Having invested early in modern mining techniques and equipment, the mines commitment to safety, health and wellbeing has always been a key priority.
According to en.wikipedia