Laboratory
GIA Laboratory Bangkok (Gemological Research (Thailand))
Bangkok, Thailand
Diamonds, coloured stones and origin, pearls
GIA's Bangkok laboratory, in the Mitrtown Office Tower, serves the Thai coloured-stone trade and is one of GIA's centres for coloured stone research and field gemmology.
What it does
Coloured stone identification and origin reports, diamond grading, pearl reports, and GIA's courses in Bangkok.
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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