I don't think you should doubt that Jiading Mall is still a regular store. Beijing Xiebao Jewelry Testing Center is a jewelry and jade testing institution certified by the national quality and technical supervision department. Since there is a certificate, the possibility of counterfeiting is very small. Besides, it is generally impossible to sell fakes with real certificates (because certificates have specific authentication objects). If you really don't feel at ease, you can go to Shanghai Jewelry Testing Center for a test (but it will cost a lot of money, and if it is true, you have to bear it all).

You can also go to Beijing Xiebao Jewelry Testing Center for online verification, mainly to check the authenticity of the certificate and the photos corresponding to the goods.