A world leader in coloured gemstone, diamond and pearl testing
Get your items tested by us.
- Fast shipping and safe door-to-door delivery
- On-site testing in Bangkok, Hong Kong and USA
- Easy order and secure payments by credit card
- SSEF Report verification*
*Verify your SSEF report and download a digital copy at www.myssef.ch
Upcoming on-site testing
Get your gems tested at SSEF’s office in Tucson from 31 January to 05 February 2023.
Celebrating 50 years of SSEF
Some 150 industry leaders and opinion-makers from around the world gathered in Basel in September 2022 to celebrate the golden anniversary of SSEF.
Become a gem expert
Since its successful beginning in 2001, SSEF’s education department has offered a broad spectrum of gemmological courses to thousands of students from industry, trade, and academia.
Discover our courses
- All levels of gemmology
- Large course collection of stones
- Leading gemmologists as lecturers
- Highly practical courses in small groups
We also provide tailored courses for individuals and companies.
Free online courses by SSEF
Start your journey to becoming a gem expert with these introductory online courses.
Research at SSEF
Since its beginnings over 50 years ago, the Swiss Gemmological Institute SSEF has been a driving force and at the forefront of scientic innovation in gemmology. Our dedication to gemstone scientific research is an important foundation to our expertise and reliability in testing.