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Precious Metals

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Precious Metals

The process of testing precious metals to ensure their quality Click to show or hide the answer
Certifies the quality of precious metals (in Britain) Click to show or hide the answer
Hall in the City of London where all precious metals were (originally) officially inspected and marked, giving its name to the hallmarking process Click to show or hide the answer
Hallmarked since 1974 (in the UK) Click to show or hide the answer
Hallmarked since 2009 (in the UK) Click to show or hide the answer
The four hallmarks of English silver Click to show or hide the answer
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Smooth, fine–grained but abrasive stone used for testing precious metals – name used metaphorically for any method of testing the validity or merit of a concept Click to show or hide the answer

Assay mark for Birmingham Click to show or hide the answer
Assay mark for Edinburgh Click to show or hide the answer
Assay mark for London Click to show or hide the answer
Assay mark for Sheffield Click to show or hide the answer

A seated female figure (Hibernia) is the assay mark of; sterling silver, and gold of 22 carats or above, are hallmarked with a crowned harp Click to show or hide the answer

Carats in pure gold Click to show or hide the answer
Carat rating of gold bearing the number 375 Click to show or hide the answer

© Haydn Thompson 2017