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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,739,514 | 114 | 570,725 |
| 2006 | $1,937,290 | 238 | 0 |
| 2007 | $2,229,620 | 2,644 | 13,220,000 |
| 2008 | $1,287,599 | 1,588 | 7,941,752 |
| 2009 | $1,325,450 | 1,291 | 6,457,491 |
| 2010 | $2,509,155 | 54,081 | 270,402,862 |
| 2011 | $3,753,169 | 14,238 | 71,190,735 |
Note: Quantity represents Weight in carats
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