Usually, local jewelry and jade appraisal institutions can identify jadeite original stones. Of course, if you think it's troublesome to send it for identification, you can identify it by listening to the sound, weighing and bending hardness.
Jewelry Appraisal of Guiyang City: 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.
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.