According to information given to correspondent Air Force Agency at Federal Criminal Militia Committee of Home Ministry of RF illegal gems turnover is one of the leading criminal businesses in Russia. The number of criminal cases during January-April borders on 1,000 that is 31% more than of the same period of the last year. During 4 months of the current year 398 people were coinvicted for such crimes. 590 cases were forwarded to courts of Russia.