How to quickly test gold or silver with a magnet: what works, what doesn't

The magnet test is one of the oldest quick checks for precious metals. Gold and silver are not magnetic, so if a piece is strongly attracted to a magnet it is unlikely to be solid gold or silver. However, this method has significant limitations that every buyer should understand.

How the test works

Hold a strong rare-earth magnet near the item. Genuine gold and silver will show no magnetic attraction. If the piece is strongly pulled toward the magnet, the metal is likely iron or steel — common in gold-plated or silver-plated items.

What the test cannot tell you

Many metals used in counterfeit or plated items — copper, brass, aluminium — are also non-magnetic. Passing the magnet test does not confirm that a piece is solid gold or silver. A gold-plated copper bracelet will pass the magnet test just as easily as a genuine 18k gold bangle.

Hallmarks remain the gold standard

In the United Kingdom, genuine gold and silver items are required by law to carry hallmarks stamped by an Assay Office. These marks confirm the metal content and are the most reliable method of verification available without laboratory testing.

At Cadmore Auctions, our specialists check hallmarks on all relevant lots before cataloguing. Buyers are always welcome to request additional information or a condition report before bidding.