| Penta Diamonds
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Manufacturers and wholesalers of loose fancy shaped diamonds including marquise, oval, heart and pear shapes. URL: http://www.penta-diamonds.com
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| Sarin Technologies
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Manufactures tools for optimisation and grading of rough and polished diamonds. URL: http://www.sarin.com
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| Schachter and Namdar Botswana
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Diamond manufacturer in Botswana. URL: http://www.source.bw/
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| Smolensk State Unitary Company Production Corporation
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Diamond polishing company providing "Russian cut" or the "Russian make" stones between 0.01 and 7.00 carats in weight and include various colours and purities. URL: http://www.kristallsmolensk.com/
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| Waldman Diamond Company,
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Diamond manufacturer, buyers and sellers. URL: http://www.wdcgroup.com/
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