<P> Gautam Shantilal Adani (born 24 June 1962) is an Indian billionaire businessman who is the chairman and founder of Adani Group . According to Forbes, his net worth is estimated to be $8.81 billion as of September 2017 . He founded the Adani Group in 1988, which now deals in businesses spanning coal trading, coal mining, oil & gas exploration, ports, logistics, power generation, agriculture, edible oils, transmission and gas distribution . </P> <P> Gautam Adani was born into a Gujarati Jain Bania family on 24 June 1962, in Ahmedabad . He is the son of Shantilal and Shanta Adani and has seven siblings . His parents had migrated from the town of Tharad in the northern part of Gujarat . He did his schooling at the Sheth Chimanlal Nagindas Vidyalaya school in Ahmedabad . He started a bachelor's degree in commerce at Gujarat University, but dropped out after the second year . </P> <P> After working as a diamond sorter at Mahindra Brothers for two years, Adani set up his own diamond brokerage business in Mumbai, India . Mahasukh Adani, his elder brother, called him back to Ahmedabad to run his newly purchased plastic factory . He soon started commodity trading by importing polyvinyl chloride (PVC), a key raw material for manufacturing plastic . </P> <P> In 1988, he started Adani Enterprises Limited (formerly known as the Adani Export Ltd), the flagship company of the Adani Group, that traded in a variety of power and agricultural commodities . The 1991 economic liberalization policies fuelled the rapid growth of the business leading to huge profitability of Adani Exports . This provided further capital to Adani to expand his business . In 2006, Adani Exports was renamed to Adani Enterprises Limited . In 1993, the Government of Gujarat invited private companies to run the Mundra Port and in 1995 the contract was given to Adani Group . Today, Mundra Port is the largest Private Sector port in India, with capability of handling close to 210 million tonnes of cargo per annum . </P>

Who started career as diamond sorter in mumbai