Generally speaking, only jade-producing provinces are qualified as professional experts, such as Shandong and Guangdong. Peking University's jewelry appraisal center is famous, and Guangdong's evidence says there are many frauds. Just go directly to your local appraisal center, which is available in Shanghai, or go to the Technical Supervision Bureau or the Geological Research Institute. The certificate can't say anything about jewelry, the key is the quality of the goods. but

Jewelry stores in many large shopping malls can also do appraisal.