Laboratory
Edinburgh Assay Office
Edinburgh, United Kingdom
Precious metal testing and hallmarking
The Edinburgh Assay Office is run by the Incorporation of Goldsmiths of the City of Edinburgh, whose hallmarking goes back to the 15th century. Its mark is a castle.
What it does
Testing and hallmarking of gold, silver, platinum and palladium, and related services.
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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