World's largest cutter and polisher of diamonds is benefiting from diamond recovery; growing business in lucrative new markets like China and India. Trying to regain investor confidence in real estate holding company Africa Israel after negotiating a large debt settlement in 2009; injected a reported $400 million out of his own pocket, sold off assets. Still, stock price down 30% over the past year. Looking for uptick in Russia; sent his daughter to open high-end Moscow mall. Born in Uzbekistan, his Lubavitcher Jewish family fled to Israel in 1971. Made his name undercutting De Beers diamond cartel, striking his own deals with diamond-producing countries like Russia and Angola. President of the Federation of Jewish Communities in Russia.