RAPAPORT... Revenue at Gem Diamonds fell in the first half of the yearamid weakness in the market. Sales of rough diamonds from the Let??engmine in Lesotho plunged 44% to $94.5 million by value, and dropped10% to 55,714 carats by volume, the miner reported last week. The average price declined to $1,697 percarat, compared with $2,742 per carat in the same period a year ago. Total sales were slightly below investment bank Berenberg's $95.5 millionestimate, which forecast the average price at $1,728 per carat. However, the average price is likely to rise as mining moves to the higher-value portions of the deposit in the second half, Berenberg noted."[The first half] was difficult and has not been aided by aweak market, but Gem remains our preferred name in a challenging diamondsector," the bank said. Production at Let??eng fell 8% to 56,668 carats, as the minerretrieved ore from a lower-grade portion of the pipe. Gem Diamonds also treatedlower volumes of ore, resulting in a smaller quantity of carats recovered, itexplained. The company found three diamonds larger than 100 carats inthe January-to-June period, compared with 10 in that category during the sameperiod a year ago. The highest per-carat price the company achieved for a whitediamond during the first half was $48,225 for a 70.69-carat, D-color, type IIastone, while a 13.32-carat pink garnered $656,934 per carat, its highest per-caratprice for a Let??eng diamond. Some 15 diamonds fetched more than $1 million eachduring the period. In the first six months of the year, Gem Diamonds finishedconstruction of a pilot plant, which will help it identify diamonds withinkimberlite and remove them without breakage. Commissioning and ramp-up of thenew plant will take place in August. The company also entered into an agreement to sell itsGhaghoo mine in Botswana for $5.4 million. It expects to complete the sale inthe second half of the year. Image: The Let??eng mine. (Gem Diamonds)