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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $474,627 | 23 | 112,765 |
| 2006 | $775,580 | 18 | 0 |
| 2007 | $74,239 | 2 | 12,435 |
| 2008 | $219,765 | 2 | 9,570 |
| 2009 | $163,820 | 5 | 24,445 |
| 2010 | $294,442 | 2,623 | 13,114,791 |
| 2011 | $323,264 | 1,434 | 7,170,706 |
Note: Quantity represents Weight in carats
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