A hetian jade bracelet gives a certificate, identifies it and buys a peace of mind. The full name of NGTC is NationalGemstoneTestingCentre, which belongs to the Jewelry Management Center of the Ministry of Natural Resources and is the most authoritative jewelry and jade testing institution in China.
Usually, provincial capitals have formal jewelry and jade appraisal institutions authorized by the state. Can identify the authenticity of the material. The authoritative one is: National Jewelry and Jade Quality Supervision and Inspection Center. It is an authority on the detection of jewelry and jade in China.