Shenzhen National Jewelry Inspection and Testing Center is a professional quality inspection institution for jewelry and jade authorized by the relevant national authorities according to law, and it is the authority on jewelry and jade inspection in China. The agency has CMA and CNAS inspection qualification certificates, provides entrusted inspection services to the society and undertakes market inspection services for jewelry. It is an impartial and independent third-party jewelry and jade testing laboratory, and its reports and certificates have legal effect.