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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $145,778 | 15 | 75,000 |
| 2006 | $347,493 | 0 | 0 |
| 2007 | $562,415 | 4,986 | 24,930,000 |
| 2008 | $192,626 | 59 | 295,000 |
| 2009 | $427,174 | 24 | 120,000 |
| 2010 | $71,293 | 16 | 80,000 |
| 2011 | $141,742 | 11 | 55,000 |
Note: Quantity represents Weight in carats
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