Beijing Peking University Gem Appraisal Center is formal. Peking University Gem Appraisal Center is the first jewelry testing and appraisal unit in China to obtain the laboratory accreditation certificate of China National Accreditation Committee for Conformity Assessment and the first batch of measurement accreditation certificates of China National Certification and Accreditation Administration (1994). The center is well-equipped, with strong technical force, and has many well-known experts in the jewelry industry and high-quality jewelry and jade appraisal technicians. Beijing Peking University Gemstone Appraisal Center currently has 58 staff members, of whom 10 has senior titles, and 16 have obtained the qualification certificate of national quality inspector for jewelry and jade. Over the years, the center has issued a large number of fair and authoritative testing reports, which have solved many problems in testing and appraisal and won wide recognition and praise from the society. Beijing, referred to as "Beijing" for short, is the capital of People's Republic of China (PRC), the national political and cultural center, a world-famous ancient capital and a modern international city. Beijing is located at 39 degrees 56 minutes north latitude and 1 16 degrees 20 minutes east longitude. It is located in the north of North China Plain, bordering Tianjin in the east and Hebei Province in the rest.