Neodymium magnets are very strong and can help to test the authenticity of gold and silver bars, coins, bullion, or jewelry. However, it is important to note that this method is not foolproof.
How It Works
Gold and silver are not considered ferromagnetic due to their lack of iron, nickel, and cobalt. With that said, if a neodymium magnet is attracted to the gold or silver, that means that it contains trances of other metals and is not pure.
However, this test is not entirely foolproof. For example, if the item is made from aluminum or copper, it will also not be attracted to a neodymium magnet.
Additionally, some fake jewelry may be made of ferromagnetic materials and still pass the magnet test if the magnet is not strong enough to detect the material. Therefore, it is important to use a strong neodymium magnet when testing jewelry for authenticity.
As mentioned above, it's important to use a strong neodymium magnet when testing gold or silver for purity.
We usually recommend using a 1/2 x 1/8 Inch N42 Disc Magnet.
I design and make refrigerator magnets for extra money. The magnets work great and provide an inexpensive source.
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modular printed models
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Hang LED lights on metal ceiling in garage. Worked great.
To activate a magnetic sensor
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backup for plug welding holes
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Great for adhering metal art to fridge or other metal surfaces.
These 1/4 x 1/4 Inch Neodymium Rare Earth Cylinder Magnets N52 were exactly what I needed and came exactly as described. Also, were delivered on time as promised. Better than that totalElement warned me at the time of purchase, I needed to be careful with them because they could chip if not handle with care. I thought that was very helpful information most companies would have just neglected to tell their customers. Thank you totalElement for the great product and even better service!
Very strong mini magnet. Works very well and you do not have to go very deep into the piece.
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These were the perfect diameter & thickness for my application. The adhesive backing is strong enough to affix to my objects. Yet, they do not pull apart when removing from the surface relative to the pull strength. Good Magnets. Just a few more of many of that I’ve procured through Total Element, thank you!