There are several places that you can choose according to your convenience. The certificates issued are all recognized by Shanghai Institute of Testing Technology.

Address: No.716 Yishan Road, Shanghai

Tel: 02 1-6470 1065, 64839409.

East China University of Science and Technology Gem Testing Center

Address: Room 309, 7th Floor, East China University of Science and Technology, Meilong Road 130, Xuhui District, Shanghai.

Tel: 02 1-64250882

Tongji university gem testing center

Address: Tongji University Energy Building, No.0/239, siping road, Shanghai.

Tel: 02 1-65983382

China light industry general office Bao jade supervision testing center Shanghai detecting test station

Address: No.6, Lane 365, Xinhua Road

Tel: 02 1-63220033-3 10.

Shanghai zhongbaobao jade testing center

Address: No.34 Yuanmingyuan Road

Tel: 021-63215850 200002

Shanghai Central Laboratory of Geology and Mineral Resources Department Jewellery and Jade Identification Center

Address: 4 Zhenda Road18

Tel: 5668 1084

Bao Zhong gem identification center

Address: Donghua Famous Diamond Jade Hall, No.6/kloc-0, Lishui Road, Zhenbao Yinlou, No.789 North Sichuan Road

Tel: 62 168627

Jewellery jade yuyuan detecting test station

Address: Floor 2, Huabao Building, No.59 Wenchang Road

Tel: 63111785-8015.