GIA certificate data comes from the official website, ownership owned by GIA.
International Gemological Institute
国际宝石学院
IGI certificate data comes from the official website, ownership owned by IGI.
European Gemological Laboratory
欧洲宝石实验室
EGL certificate data comes from the official website, ownership owned by EGL.
Hoge Raad voor Diamant
比利时钻石高阶议会
HRD certificate data comes from the official website, ownership owned by HRD.
Gem research Laboratory
瑞士宝石研究实验室
GRS certificate data comes from the official website, ownership owned by GRS.
American Gem Society
美国宝石协会
AGS certificate data comes from the official website, ownership owned by AGS.
Gubelin Gem Laboratory
瑞士古柏林宝石实验室
Gubelin certificate data comes from the official website, ownership owned by Gubelin.
LOTUS GEMOLOGY
曼谷宝石实验室
LOTUS certificate data comes from the official website, ownership owned by LOTUS.
AIGS
亚洲宝石学院
AIGS certificate data comes from the official website, ownership owned by AIGS.
NGTC
BEIDA
GTC
GIC
NJQSIC
CCGTC
NGSTC
GDTC
More
NGDTC
CQT
GIB
CGJC
GGC
National Gemological Training Centre
国家珠宝玉石质量监督检验中心
NGTC certificate data comes from the official website, ownership owned by NGTC.
Gem Appraisal Center of Peking University
北大宝石鉴定中心
Gem Appraisal Center of Peking University certificate data comes from the official website, ownership owned by Gem Appraisal Center of Peking University.
Guangdong Gemstones & Precious Metals Testing Centre
广东省珠宝玉石及贵金属检测中心
GTC certificate data comes from the official website, ownership owned by GTC.
Gemmological Institute of China University of Geosciences
中国地质大学（武汉）珠宝学院
GIC certificate data comes from the official website, ownership owned by GIC.
National Jewelry Quality Supervision and Inspection Center
国家首饰质量监督检验中心
NJQSIC certificate data comes from the official website, ownership owned by NJQSIC.
Jewelry Testing Center Of All-China Federation Of Industry And Commerce
中华全国工商联珠宝业商会珠宝检测研究中心
CCGTC certificate data comes from the official website, ownership owned by CCGTC.
National Center of Quality Supervision & Inspection On Gold-Silver Products
国家金银制品质量鉴督检验中心(南京)
NGSTC certificate data comes from the official website, ownership owned by NGSTC.
Guangdong Provincial Jewelry Testing Center
广东省金银珠宝检测中心
GDTC certificate data comes from the official website, ownership owned by GDTC.
National Gold & Diamond Testing Certer
国家黄金钻石制品质量监督检测中心
NGDTC certificate data comes from the official website, ownership owned by NGDTC.
Technical quality of China(BeiJing)Jewelry Quality Testing Center
中检质技(北京)金银珠宝质量检测中心
CQT certificate data comes from the official website, ownership owned by CQT.
BEIJING CUG GEM TESING CENTER
北京中地大珠宝鉴定中心
GIB certificate data comes from the official website, ownership owned by GIB.
Gem Identification Centre,China General Chamber of Commerce
中国商业联合会珠宝首饰质量监督检测中心
CGJC certificate data comes from the official website, ownership owned by CGJC.
ZheJiang Gold Jewelry Quality Inspection Center
浙江省黄金珠宝饰品质量检测中心
ZheJiang Gold Jewelry Quality Inspection Center certificate data comes from the official website, ownership owned by ZheJiang Gold Jewelry Quality Inspection Center.
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