Beijing Zhong Da Jewelry Appraisal Center is directly affiliated to the Jewelry College of China Geo University (Beijing). Long-term commitment to the detection and identification of jewelry and jade, scientific research and teaching, and the authoritative identification certificate of CMA, CNAS and ILAC-MRA international mutual recognition can be issued.

Consumers can check the authenticity of the certificate through the website of Jewelry Testing Center of China Geo University.