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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $278,999 | 0 | 773,385 |
| 2006 | $270,282 | 0 | 46,003,400 |
| 2007 | $298,198 | 375 | 55,906,137 |
| 2008 | $275,445 | 0 | 1,229,331 |
| 2009 | $142,959 | 98 | 505,760 |
| 2010 | $334,585 | 206 | 1,043,500 |
| 2011 | $552,324 | 522 | 1,565,601 |
Note: Quantity represents Weight in carats
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