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COSCUEZ, Colombia - Deep inside the lush and remote mountainous ranges of Colombia’s Boyacá region, the women disappear into dark tunnels, wreathed in shades of red and brown, sifting through nature’s ...
A country famed for its fine emeralds since the time of Cleopatra, Colombia has seen a significant increase in foreign direct investment over the past decade or two, with businesses from the United ...
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HIDDENITE, N.C. — A married couple from Hiddenite, NC found a 50.5 carat emerald on a dig Friday morning. They say the estimated value of the gem is $10,000. Libby and Kevin Barrieault went on a dig ...
Alpha Natural Resources will close its Emerald Mine in southwestern Pennsylvania in November.Alpha, in December, sold its Pennsylvania coal subsidiary to Rosebud Mining Co. but continues to operate ...
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Mapping the gemstone mining hotspots
The Montepuez ruby mine in the north-east of Mozambique boasts the largest ruby asset globally and is currently valued at around $1bn. It produces some of the oldest rubies in the world, originally ...
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