Beijing Cug Gem Testing Center

Beijing Cug Gem Testing Center  Co., Ltd. (abbreviated as Beijing Cug Gem Testing Center) is a subsidiary unit of China University of Geosciences (Beijing). It is established in the campus of China University of Geosciences (Beijing) and has been approved by the Haidian Branch of Beijing Administration for Industry and Commerce. Registered and formally established in April 2012, a company limited by shares with independent legal person status.

Its predecessor, "Beijing Diversity Gem Testing Center", was the earliest institution engaged in jewelry appraisal and research in China. The center passed the National Laboratory Accreditation (CNAS) for the first time in December 2001, the registration number is CNAS L1203; in June 2002, it passed the National Metrology Accreditation (CMA) for the first time, the number is 2013002154Z, and began to carry out standardized and international laboratory construction and management. 

The center's mission is to be based on scientific methodology, and provide fair, rigorous, and accurate quality in the issuance of gem identification certificates to the society. The services provided by the center include:

(i) gem identification and improvement of testing methods,
(ii) method research of new materials,
(iii) development, promotion and application of gem testing equipment,
(iv) gem inspection,
(v) consultancy advice
(vi) personnel training.

However despite being linked to a University, we also do our due diligence of running a background check on them.

Details Information
Chinese Name 北京中地大珠宝鉴定中心
English Name Beijing CUG Gem Testing Center
Chinese Address 北京市海淀区学院路29号,中国地质大学(南翼楼)305室
English Address No. 29, Xue Yuan Road, Haidan District Beijing
Phone Number (86-10)82323039   
Official Website
CNAS License Number L1203
CMA License Number 160010342154
GB/T Standards GB/T 16552, GB/T 16553, GB/T 18043, GB 11887


Below is an example of the certification of Authenticity Provided by Beijing Cug Gem:


The following information is provided in the certificate:

  • Identified Results
  • Total Weight
  • Cutting Style
  • Refractive Index
  • Density
  • Optical Character
  • Magnification Test
  • Precious Metal
  • Remarks
  • Case Number
  • QR Code
  • Signed by Identifier
  • Signed by Supervisor

From our research, we confirmed that the Beijing Cug Gem Testing Center also does the standardized handling of jewellery and natural gemstones. Being situated near to the university also helped us to verify that the center is in operation. The CNAS License number together with the website also confirmed the legitimacy of this testing center.

Leave a comment

Please note, comments must be approved before they are published