GJIIE 2012 will be a unique event for the jewellery industry in southern India and is one of the International B-2-B Jewellery Exhibition in the region, jointly organized by UBM India and The Madras Jewellers and Diamond Merchants Association (MJDMA) . UBM is the organizer and owner of several global jewellery trade fairs, including Asia 's biggest international jewellery trade fair, the September Hong Kong Jewellery & Watch Fair, which is held annually. This fair attracts 40,000 visitors from 140 countries and regions, and over 2,400 exhibitors from 47 countries and regions.