| 31. | But for wit and even wisdom, " Pushing Tin " is a rough diamond.
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| 32. | The worldwide production of rough diamonds was worth US $ 7.8 billion last year.
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| 33. | Before exporting, rough diamonds are certificated by the government of the country of origin.
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| 34. | Previously, few formal rules governed the origin of rough diamonds.
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| 35. | Until now, De Beers has sold rough diamonds to jewelers to be cut and polished.
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| 36. | And he personally offered to sell me rough diamonds.
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| 37. | Russia has exported no rough diamonds yet this year.
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| 38. | It was addressed to Clarence Stamp, the Rough Diamond.
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| 39. | Finally, long term supplier contracts in key sectors such as oil, gas and rough diamonds.
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| 40. | Founded in Kimberley, South Africa, De Beers controls nearly two-thirds of the world's rough diamonds.
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