Rajesh Exports, which Rajesh Mehta cofounded with his older brother Prashant, is India's largest manufacturer and exporter of gold jewelry. It reported a 16% rise in revenues to $5.9 billion, buoyed by rising exports and retail sales. But shares took a hit because of government's curbs on gold imports. Another brother, Mahesh, shares the fortune, which also includes the value of his stakes in African gold mines.