Many people collect jewelry, but want to know whether it is good or bad, but don't know where the jewelry identification is more authoritative and accurate? The more authoritative jewelry identification certificates include the National Jewelry Quality Supervision and Inspection Center (NJQSIC), the National Gold and Silver Products Quality Inspection Center (Nanjing) (NGSTC), and the China University of Geosciences (Wuhan) Jewelry Testing Center (GIC).
The main appraisal institutions are: 1st Floor, Affiliated Building of Ministry of Land and Resources, No. 30, West Fourth Mutton Hutong, Zhongbao Xiebao Jade Testing Center; National Jewelry Quality Supervision and Inspection Center Address No. 2, Datun Road, Chaoyang District, Beijing
Sanyi Consignment Jewelry Appraisal Center Room 209, Kaito Building, No. 1858, Zhongshan West Road, Xuhui District, Shanghai; Room 518, Building 17, No.1, Mudu Dinan, Xicheng District, Ministry of Public Security;
National Jewelry Quality Supervision and Testing Center, Beijing West Fourth Mutton Alley No. 15.
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