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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $3,299,312 | 1,045 | 5,227,318 |
| 2006 | $3,264,713 | 3,990 | 0 |
| 2007 | $3,095,092 | 238 | 1,190,000 |
| 2008 | $3,387,835 | 3,524 | 17,619,747 |
| 2009 | $3,145,624 | 2,881 | 14,402,779 |
| 2010 | $743,809 | 3,737 | 18,687,223 |
| 2011 | $611,656 | 2,225 | 11,125,824 |
Note: Quantity represents Weight in carats
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