Accreditation (acceptance) certificateNo.: Zi Zi No of State Administration of Quality Supervision. 2 15.

Postal code: 200233

Tel: 02 1-6470 1065, 64839409.

Mailing address: No.716 Yishan Road, Shanghai.

Undertaking unit: Shanghai Institute of Testing Technology.

The main product scope of authorized inspection: gold and silver jewelry and other gold and silver products, jewelry and jade.

Shanghai also has the Gem Testing Center of East China University of Science and Technology.

Tongji university gem testing center

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

Tel: 02 1-65983382

Fax: 021-65981217.

Gemstone Supervision and Testing Center of China Light Industry Federation, No.6 Detection Station, Lane 365, Xinhua Road, Shanghai 021-63220033-310 200052

Shanghai Zhongbaobao Jade Testing Center No.34 Yuanmingyuan Road, Shanghai 021-63215850 200002

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

No.418 Zhenda Road 200436 T:5668 1084

Bao Zhong Gem Appraisal Center T: 62 168627

No.61No.6, Lishui Road, Zhenbao Jewelry, No.789, Sichuan North Road, Donghua Famous Diamond Jade Museum

Jewellery jade yuyuan detecting test station

2nd Floor, Huabao Building, No.59 Wenchang Road, 200010t: 6311785-8015.