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| Commodity | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| Piezo-elec. quartz | $412,000 | $418,000 | $324,000 | $666,000 | $293,000 | $113,000 | $77,000 |
| Synthetic/reconstructed precious/semi-precious stones (excl. piezo-electric ... | $150,000 | $113,000 | $49,000 | $50,000 | $42,000 | $60,000 | $494,000 |
| Synthetic/reconstructed precious/semi-precious stones, wkd./graded...; ungr ... | $825,000 | $1,806,000 | $2,171,000 | $2,597,000 | $2,578,000 | $1,807,000 | $3,247,000 |
| Total | $1,387,000 | $2,337,000 | $2,544,000 | $3,313,000 | $2,913,000 | $1,980,000 | $3,818,000 |
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