Gemological Institute of America
美国宝石学院
GIAcertificate data comes from the official website，ownership owned by GIA
International Gemological Institute
国际宝石学院
IGIcertificate data comes from the official website，ownership owned by IGI
European Gemological Laboratory
欧洲宝石实验室
EGLcertificate data comes from the official website，ownership owned by EGL
Hoge Raad voor Diamant
比利时钻石高阶议会
HRDcertificate data comes from the official website，ownership owned by HRD
Gem research Laboratory
瑞士宝石研究实验室
GRScertificate data comes from the official website，ownership owned by GRS
American Gem Society
美国宝石协会
AGScertificate data comes from the official website，ownership owned by AGS
Gubelin Gem Laboratory
瑞士古柏林宝石实验室
Gubelincertificate data comes from the official website，ownership owned by Gubelin
LOTUS GEMOLOGY
曼谷宝石实验室
LOTUScertificate data comes from the official website，ownership owned by LOTUS
AIGS
亚洲宝石学院
AIGScertificate data comes from the official website，ownership owned by AIGS
