Laboratory
SSEF Swiss Gemmological Institute
Basel, Switzerland
Coloured stones, pearls, diamonds; origin and research
SSEF, the Swiss Gemmological Institute, founded in 1974 in Basel, is a non-profit laboratory known for coloured stone and pearl research and origin determination.
What it does
Coloured stone, pearl and diamond reports, origin and treatment research, age dating of pearls, and courses.
Using any laboratory
- Ask what the report will state (identity, treatment, origin, grade) and how long it takes; turnaround and fees change.
- Check a report online with the laboratory's own report-check service, and match the stone to the report.
- Reports from different laboratories can differ, especially on colour grades, treatment and origin. A report is an opinion based on the tests made, not a valuation.
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