Our mission is to make gemology accessible and affordable
Established in 1998, IGS is the largest online gemology resource and community.
Who are IGS members?
A society is about people that are interconnected. Here at IGS, our passion for gemstones brings us together. IGS has members on every continent (except Antarctica) who range from seasoned professionals to the merely curious.
Accelerate your path towards a professional gemology career
Learn key knowledge and skills to further pursue your passion
Lapidaries & Metalsmiths
Deepen your skillset for working with gemstones in jewelry
Collectors & Private Dealers
Price and quality guidance on over 70 types of gemstones
What people are saying
" I very much liked the Diamond Specialist Course, it is excellent, as comprehensive as it could be, and its structure offers all the theoretical and practical knowledge for grading and evaluating diamonds. Moreover, IGS related articles complement and consolidate what you learned during the course. "Daniel PenescuIGS Member
" I have been faceting gems as a hobby and just wanted to learn more about what I was really doing. I have gotten hooked now and really enjoyed your course. It is very well done . I'm going to see where this may lead me in the future now. Thank you all so much! "James MullinIGS Member
" I have never known or heard of an organization that offers so much for its members, and at such a low cost. What started as a hobby in 1998 and now is a small home business for my wife and I has been made so much easier by the information you supply. Thank you. "Ernest and Peggy Roisch, Rainbow Rocks, LTD IGS Member
" You know the best thing that I have learnt from your great courses is that it does not matter how much you think you know about gems, you never stop learning, each day there is something more learn, it will never stop. Thank all for the help, education and support that you give IGS members. "Peter CheckleyIGS Member
The IGS Team
The management and advisory team at IGS is a diverse group of professionals committed to delivering our mission.
Seth and Lisa Rosen
Donald Clark, CSM IMG
Jeffery Bergman, SSEF SGC
Vice President Emeritus
Joel E. Arem, Ph.D., FGA
Fatma Oya Borahan, GG, FGG
Barbara Smigel, PhD. GG
Dr. Gerald Wykoff GG CSM
Jeff R. Graham
Kyrylo Gubariev, Graduate Gemologist (GG, AJP)
When you join the IGS community, you get trusted diamond & gemstone information when you need it.
Get started with the International Gem Society’s free guide to gemstone identification. Join our weekly newsletter & get a free copy of the Gem ID Checklist!