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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $686,316 | 0 | 3 |
| 2006 | $1,053 | 0 | 1 |
| 2007 | $16,420,093 | 310 | 870,136 |
| 2008 | $307,356,870 | 831 | 4,155,111 |
| 2009 | $217,506,519 | 1,032 | 5,161,421 |
| 2010 | $456,674,288 | 2,449 | 237,939 |
| 2011 | $714,291,068 | 3,950 | 0 |
Note: Quantity represents Weight in carats
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