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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $89,407 | 19 | 96,430 |
| 2006 | $92,996 | 56 | 200,932 |
| 2007 | $68,921 | 24 | 112,436 |
| 2008 | $266,676 | 191 | 143,929 |
| 2009 | $213,506 | 0 | 118,386 |
| 2010 | $351,485 | 24 | 121,000 |
| 2011 | $603,645 | 48 | 2,628,977 |
Note: Quantity represents Weight in carats
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