Editing Gemology (section)

===Institutes===
* [[American Gem Society]] – AGS
* [[Asian Institute of Gemological Sciences]] – AIGS
* [[Canadian Gemmological Association]] – CGA
* [[Canadian Institute of Gemmology]]  – CIG
* [[Gemological Science International]] – GSI
* [[Gemmological Association of Australia]] – GAA
* [[Gemmological Association of Great Britain]] – Gem-A
* [[Gemological Institute of America]] – GIA
* [[German Gemmological Association]] – DGemG
* [[Guild Education Gemology]]
* [[Institut National de Gemmologie]] – ING
* [[International School of Gemology]] – ISG
* [[Hoge Raad voor Diamant]] – HRD
* [[International Gemological Institute]] – IGI
* [[Italian Gemmological Institute]] – IGI
* Institute of Gem Trading – IGT<ref>{{cite web |title=Institute of Gem Trading |website=Institute of Gem Trading |place=Thailand |language=en-US |url=https://igtthailand.com/ |access-date=2019-10-13}}</ref>
* [[Gemmological Institute of India]] – GII
* [[Center of Gemological of Indonesia]] – COG
* [[Swiss Gemmological Institute]] – SSEF
* World Gem Foundation