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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $752,485 | 7 | 40,023 |
| 2006 | $1,092,006 | 10 | 41,908 |
| 2007 | $2,410,354 | 14 | 71,018 |
| 2008 | $2,412,850 | 14 | 67,419 |
| 2009 | $618,367 | 8 | 38,838 |
| 2010 | $638,163 | 4 | 17,671 |
| 2011 | $666,633 | 4 | 17,897 |
Note: Quantity represents Weight in carats
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