Identification of jadeite can go to the local jewelry and jade quality supervision and testing center, which is more authoritative. In addition, in some jade crystal wholesale distribution centers, such as Sihui, Donghai and other cities, there will also be gem testing institutions.

Nantong Cultural and Artistic Jade Appraisal Center, No.37-1South Street, Chongchuan District, Tel: 0513-85911889. Nantong Cultural and Artistic Jade Appraisal Center, Wenfeng Road 1, Chongchuan District, Tel: 0513-85911889. Nantong Emerald Appraisal Center, No.300 Renmin East Road, Chongchuan District, Tel: 05 13-85559780.

Jade can go to an authoritative jewelry and jade appraisal institution with national qualification certification for instrument appraisal and issue an appraisal certificate. In this way, the result is exact, the authenticity is clear at a glance, and it can be foolproof.

Chongqing jade can be identified as follows: Chongqing has a jade quality inspection station called the National Jewelry and Jade Quality Supervision and Inspection Center. Address: International Business Center, Zhonghua Road, Jiefang North Road, Yuzhong District, Chongqing.

There are several jade appraisal institutions in Guiyang: Guiyang Jewelry Appraisal: located on the 2nd floor of Guizhou Provincial Department of Commerce Building, Haizhu Road 168, Nanming District, Guiyang City. Gemstone identification in Peking University: Zhongguancun 10007 1, Haidian District, Beijing. Shanghai Jade Appraisal Institution: Tongji University Energy Building, siping road 1239, Shanghai.