Laboratory
CISGEM
Milan, Italy
Diamonds, coloured stones, pearls, coral
CISGEM is a gem laboratory in Milan, set up under the Milan Chamber of Commerce in 1984 to serve the Italian jewellery trade.
What it does
Diamond grading and identification of coloured stones, pearls and coral.
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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