Emeralds Zambia produces about 20% of the world's emeralds and they are much sought after due to their deep green colour. The gemstones are recovered ...
2007-4-16· Copper mining and refining dominates the mineral industry of Zambia and its economy has experienced strong GDP growth of about 6% annually during the ...
by Chris Lang, Nick Hildyard, Kate Geary and Matthew Grainger. first published 28 February 2000