A diamond bourse is a diamond market or diamond exchange where diamond dealers and jewelers can buy and sell diamonds. Bourses are located in major diamond trading centers, such as Antwerp, Mumbai, and New York City. At a diamond bourse, dealers can trade in both polished and rough diamonds. The Surat Diamond Bourse (SDB) is a diamond bourse located in Surat, India. It is the world‘s largest diamond bourse, with over 3,000 members. The Surat Diamond Bourse was established in 2000, and is located in the city of Surat, which is a major diamond trading center. The bourse has over 3,000 members, and trades in both polished and rough diamonds.
The Surat Diamond Bourse is regulated by the Diamond Exchange of India (DEI), which is a self–regulatory organization.