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The List of Gem Testing Labs in China - 2023

The gem identification Labs are ranked by their authority and fame, a chinese testing report can gives an authoritive certification to some special gemstones in China: Fei Cui(Jadeite), Hetian Jade, Nanhong Agate(Southern Red Agate), Changhua Bloodstone, also for Diamond, Ruby, Sapphire, Emerald, Tsavorite, Spinel, Aquamarine, Peridot etc. It is helpful for worldwide buyers to buy gems from China. Gemstone Treatment/Heating Certificate in Beijing, Shanghai, Shenzhen, Guangzhou...
If you need to have certificate for gems and jades from chinese gem labs, just contact me.

- - - - - Native Gem Labs in China - - - - -

1. National Gemstone Testing Center(NGTC)
in Beijing, Shanghai, Guangzhou, Shenzhen
the most famous and respected lab in China, operated by the gov.
A lot of jewelries are exported from chinese manufacturers to many countries with NGTC gem certificate and diamond grading report.
http://www.ngtc.com.cn/

2. Gemmological Institute of China University of Geosciences(GIC)
in Wuhan, Shanghai, Guangzhou, Shenzhen
very famous lab by the respected university.
http://www.gic.cug.edu.cn/

3. GTC China - Guangdong Gemstones & Precious Metals Testing Center
in Guangzhou, Shenzhen, Pingzhou(Foshan), Sihui(Zhaoqing), Yangmei(Jieyang).
operated by Guangdong gov.
http://www.gtc-china.cn/

4. NGSTC
in Nanjing, Shanghai, Guangzhou, Shenzhen
operated by the gov.
http://www.ngstc.cn/

5. Gem Research Chinalab(GRC)
in Guangzhou, Beijing, Shenzhen
professional in ruby/sapphire heat treatment certificate, emerald oil enhancement & treatment certificate, very reasonable price for certificate in Chinese and English versions.
http://www.grclab.vip

6. Gem Appraisal Center of Peking University(GAC)
in Beijing, Shanghai, Guangzhou, Shenzhen
operated by Peking University.
http://www.pkugac.com

7. GDTC
in Panyu(Guangzhou), Shenzhen, Pingzhou(Foshan), Sihui(Zhaoqing), Donguan.
operated by Guangdong gov.
http://www.gdtc.cc/

- - - - - Foreign Gem Labs in China - - - - -

1. GUILD Gem Lab
in Shenzhen
professional in precious gems testing(origin, color grading, treaments).
http://guildgemlab.com/

2, AIGS Lab China(The Asian Institute of Gemological Sciences)
in Shanghai
professional in precious gems testing(especially in ruby and sapphire).
https://www.aigsthailand.com/

3. GUBELIN Gem Lab, Shanghai Collection Center.
All types of gemstones can be dropped-off at this collection centre, and will be forwarded to the Gübelin Gem Lab in Hong Kong for testing. Thereafter, the gemstones will be returned to the collection center in Shanghai.
https://www.gubelingemlab.com/

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2021-11-25, Keeping in Update...

Reference:
The List of Top Gem Labs in The World.
The List of Gem Labs in Hong Kong.

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