It is an independent privately run business, owned by the Incorporation of Goldsmiths of the City of Edinburgh.
The incorporation's importance in the life of the city and country was confirmed in 1687 when King James VII granted it a royal charter.
[2] The Edinburgh Assay Office is housed in a category B listed building,[3] Goldsmiths Hall in the Broughton Street.
It is a former church, built in 1816, which was fully refurbished and opened as the assay office in 1999 by Princess Anne.
In 1973, the Hallmarking Act was passed, then in 2010 palladium became the fourth precious metal to be assayed.