Laboratory
Laboratoire Français de Gemmologie (LFG)
Paris, France
Diamonds, coloured stones, pearls
The Laboratoire Français de Gemmologie (LFG), founded in Paris in 1929 by the French jewellery trade, belongs to the French jewellery federation (Union Française de la Bijouterie, Joaillerie, Orfèvrerie, Pierres et Perles).
What it does
Identification of diamonds, coloured stones and pearls, treatment detection, and research.
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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