Laboratory
ICA GemLab
Bangkok, Thailand
Coloured stones; origin and treatment detection
ICA GemLab is the laboratory of the International Colored Gemstone Association (ICA), opened in Bangkok's Jewelry Trade Center to serve the coloured stone trade.
What it does
Coloured stone identification, treatment detection and origin reports.
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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