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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $524,733 | 8 | 39,594 |
| 2006 | $3,457,883 | 195 | 974,873 |
| 2007 | $262,655 | 13 | 67,050 |
| 2008 | $6,572,819 | 50 | 251,250 |
| 2009 | $4,936,434 | 365 | 1,822,700 |
| 2010 | $1,231,275 | 5 | 23,000 |
| 2011 | $378,417 | 2 | 11,050 |
Note: Quantity represents Weight in carats
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