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Info provided by silvertradereu
Gold and Silver Bullion Testing
The Magnet test,
My personal favourite and easiest to do when in doubt, it does not damage the item and has together with product knowledge exposed every fakes that i have come across, Its also the reason why i send a free small Neodymium magnet out with every order to my customers.
The Ice Cube Test,
I’ve tried this a couple of times but as the video points out its probably the worst of the tests and is completely unreliable.
The Ping Test,
Not a big fan of this test and maybe its my hearing but its never really worked for me, plus you risk scratching the coin if you ping it too hard trying to make it work.
The Acid Test,
This test permanently damages the item and for it to really work you need to either drill or scratch into the coin or bar just in case the item is silver plated so yes it works but your wish it didn’t after you have done it!
The Ultrasound + Caliper Test.
I’ve seen the refinery where i buy my Silver bars use an ultrasound gun which apparently costs £17.000 which is a little to much but this video shows a cheaper option of doing it, however i think it might be a little to much hassle for your average collector or stacker.
The Weight Test,
The most interesting and as the video points out probably the best way of testing your items but if your out and about buying precious metals not the kind of test you can unpack in front of the seller without him ringing the police asking to have the illegal picnic removed from his store.
Ideally product knowledge and a little research will save you a lot of trouble, also buying from a reputable dealer and Knowing the weight, dimensions, thickness and look of the coin or bar is the best defense against buying fakes, But failing that learn to use a strong Magnet.
I have a brilliant short video showing how to do all 6 tests on the blog page of my website at : silvertrader.uk
Sadly i am not allowed to upload it here so if you want to watch it your have to go there!