All provincial quality supervision bureaus and gold and jewelry inspection centers can do it. The key is to be able to issue a formal inspection report. Prices vary from place to place, generally around 300 yuan. Gold is cheaper, and jewelry and jade appraisal are more expensive.

Among them, the Nanjing Jewelry Appraisal Center in Zhongshan Gate is free (if you don't issue a certificate)! Note that the Jiangsu Gold and Jewelry Appraisal Center at Zhongshan Gate is charged. You can ask when you go to the appraisal, because the two appraisal centers are in the same building. If the certificate is issued, both families want money.

Jiangsu Gold and Jewelry Testing Center No.534, Zhongshan East Road, Nanjing 025-6641708210016 Identification of No.700, Zhujiang Road, Nanjing, Jiangsu Technical Supervision Jewelry Quality Inspection Station 025-6646182-26520018. . However, the standard of appraisal fee in Nanjing is not clear.

Jiangning Gold and Jewel Tower have been appraised, and the cost is about 10-20 yuan.