Alfaro, Laura, Debora L. Spar, Faheen Allibhoy, and Vinati Dev. "Botswana: A Diamond in the Rough." Harvard Business School Case 703-027, March 2003. (Revised November 2005.) ...

The Guardian, citing data from jewelry analytics firm Tenoris, reported that the cost of a one-carat natural diamond dropped ... company's half-year results: "Rough diamond trading conditions ...