11.   Russia is the second-largest exporter of rough diamonds after Botswana, whose industry is controlled by De Beers.

12.   Some skeptics go further, asserting that venture capital is the art of finding rough diamonds, not the trade of trying to polish stones into gems.

13.   The decline was mainly due to lower prices for rough diamonds.

14.   The nations meeting in Botswana devised a system that would require every parcel of rough diamonds to travel with a passport stating its weight, value and provenance.

15.   The more technically demanding role of Odile showed Ms. Toziakova as more of a rough diamond.

16.   The rough diamond was born in Yugoslavia under the name Branko Hochwald.

17.   Thomas was an immensely touching prodigal, a rough diamond of an adolescent and an innocent with very little experience of the world.

18.   To perk up sales, Unita held a sale last year, military experts said, marking down rough diamonds prices by a third.

19.   A legislative committee on Tuesday called for the decriminalization and deregulation of the sale of rough diamonds in this southwest African country.

20.   Before leaving office, President Clinton banned the import of rough diamonds from Sierra Leone.