rough diamond in a sentence

Examples

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