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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $222,044 | 2,716 | 243,001 |
| 2006 | $79,109 | 2,671 | 71,917 |
| 2007 | $99,795 | 3,812 | 103,709 |
| 2008 | $5,890 | 1,927 | 4,726 |
| 2009 | $93,431 | 54 | 134,836 |
| 2010 | $67,500 | 10 | 50,000 |
| 2011 | $209,960 | 36 | 173,420 |
Note: Quantity represents Weight in carats
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