Surat pronunciation (Gujarati: સુરત) is a port city in the Indian state of Gujarat and administrative headquarters of the Surat District. It is the second largest city in Gujarat and ninth largest in India. The city is situated on the left bank of the Tapti River, 14 miles from its mouth. A moat indicates the dividing-line between the old city, with its narrow streets and handsome houses, and the newer suburbs, but the city wall has almost disappeared. The city is largely recognized for its textile and diamond businesses. 92% of the world's diamonds are cut and polished in Surat.