Laboratory
IIGJ Lab (GJEPC)
Jaipur, India
Gemstones, diamonds, jewellery (formerly Gem Testing Laboratory, Jaipur)
The IIGJ laboratory in Jaipur, formerly the Gem Testing Laboratory (GTL), one of India's oldest gem labs, is now run by the Indian Institute of Gems & Jewellery under India's Gem & Jewellery Export Promotion Council (GJEPC). It also has a laboratory in Mumbai.
What it does
Gemstone identification and treatment detection, especially for Jaipur's coloured stone trade, diamond grading and jewellery 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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