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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,973,905 | 165 | 824,709 |
| 2006 | $6,318,646 | 5 | 0 |
| 2007 | $6,188,730 | 33 | 165,000 |
| 2008 | $4,574,463 | 914 | 4,570,548 |
| 2009 | $1,035,799 | 112 | 560,743 |
| 2010 | $34,577 | 43 | 214,106 |
| 2011 | $25,324 | 30 | 150,000 |
Note: Quantity represents Weight in carats
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