BUSINESS
03/18/2010 05:12 am ET | Updated May 25, 2011

Tiffany's Looks To Africa As Diamond Industry Shifts

In a windowless factory in this African village, Tiffany is teaching more than 80 workers to transform raw diamonds into gems for Tiffany engagement rings. As novices recently pressed pea-size stones against whirling blades, a visiting Tiffany executive spied a problem.

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