From left to right: Prida Tiasuwan, Chairman of Pranda Jewelry Public Co Ltd -- PRANDA Group, Letitia Chow, Chairperson of the JNA Awards and Director of Business Development -- Jewellery Group at UBM Asia, Boonkij Jitngamplang, Ph.D. , President of Thai Gem and Jewelry Traders Association, and Li Chongjie, CEO of China Stone Co Ltd