GT100e — the online gemmology entry
Gemmology theory from anywhere — the online door into the gem ladder.
Official course page, syllabus and fees: school page.
Where this sits: the gemmology ladder — online entry.
Dates: the admissions calendar; enrolment via the sign-up form; guidance: the 2-minute course finder.
What students say
“I intend to contribute articles to jewellery magazines and hope that someday I can be an authority in this field. That's a dream.”
— Yen Ting C. (Singapore) · published student feedback
“It is fun, interesting & educational!”
— Shahirah A. (Singapore) · published student feedback
Free ways to explore
No sign-up, no payment — start with any of these.
Every course, family and diploma in one PDF.Take the 2-minute course finderFREE
Answer a few questions, get personal course recommendations.Free gem webinar replaysFREE
Full recorded sessions on gems and the jewellery trade.Explore the Gem GlobeFREE
An interactive globe of the world's famous gem sources.
Check the live course calendar
Upcoming class dates for every course family are published on the school's admissions calendar.
Visit jdmis.edu.sg
Jewellery Courses