At present, there is only one company in Chongqing that does diamond and jewelry testing, and its name is "Chongqing Jewelry, Jade and Precious Metals Quality Supervision and Inspection Station". The superior unit is Chongqing Metrology and Quality Inspection Institute, and the competent unit is Chongqing Quality Supervision Bureau.

This inspection station has been changed in four places (this is also the reason why many netizens provide the address of the inspection station in Shapingba).

First in Major and Shapingba, then moved to Jiangbei, Yubei and Jie Fangbei for the convenience of enterprise inspection, and moved five times before and after.

The point in Yubei mentioned by the last netizen has been moved to that beautiful building in Jie Fangbei!

Name of inspection station: Chongqing Jewelry, Jade and Precious Metals Quality Supervision and Inspection Station.

Current address: 22- 10, Block D, Times Haoyuan, No.7 Qingnian Road, Yuzhong District, Chongqing.

The telephone number is 023-65479498.