The National Gem and Jewellery Authority held an exhibition of exotic gems and jewellery at the Ratnapura District Auditorium to commemorate the completion of 40 years on Tuesday. Here, Ministers John Seneviratne, Anura Priyadarshana Yapa and Pavithra Wanniarachchi take a closer look at a gemstone at the event. Picture by Nissanka Wijerathne