China Chamber of Commerce Jewelry Quality Supervision and Testing Center (CGJC) is the only quality supervision and testing unit of jewelry and jade jewelry approved by China Chamber of Commerce (formerly Ministry of Commerce), and it is a third-party testing institution approved by China National Accreditation Committee for Conformity Assessment. In terms of qualification, the certificate of this institution is reliable and the test conclusion is credible.

But I must emphasize that the appraisal certificate can only prove the quality and true nature of the jewelry, and cannot guarantee the legality or authenticity of its source. Therefore, if you doubt the source or authenticity of jewelry when you buy it, please be sure to consult professional institutions or lawyers for more information and suggestions.