2. National appraisal and testing institutions include: National Jewelry Quality Supervision and Inspection Center, Gemstone Testing Center under China Gemstone Association, Gemstone Testing Center of Jewelry College of China Geo University (Wuhan), and provincial appraisal and testing institutions include Jewel Testing Center of provincial and municipal geological departments, Hong Kong Gemstone Appraisal Institute, jewel testing centers of provinces and cities, gemstone associations of provinces and cities and jewel testing centers of chambers of commerce.