Russian diamond mining monopoly Alrosa made $29 million at its 15th annual auction of large rough diamonds, the company announced July 4, as reported by the RIA Novosti news agency.%%Alrosa sold 1,171 stones weighing a total of 20,000 carats, including 11 diamonds weighing 50 carats or more apiece. The largest single stone sold weighed in at 94.2 carats. The auction, which was cosponsored as usual by Gokhran, the Russian Diamond Chamber, drew representatives of 45 diamond firms from Russia, Israel, Belgium, India, Switzerland, China and the United States.%%Alrosa’s sales in 2005 totaled $2.86 billion according to a preliminary tally, including $144 million in polished diamond sales. The largest stakeholder is the Russian Federation’s government, which has been seeking to increase its share from 37 percent to just over 50 percent.