Keep in mind that there are a few other metals that do not stick to a magnet and can be made to look like silver. It is better to perform the magnetic test in conjunction with another test to make sure the core is not another metal.
This test works well with coins and bars but will be harder to perform on silver jewelry.
Note that this method has the potential to slightly damage your silver item. If you suspect you have a high value item, you might be better off trying to determine the silver content using one of the other methods listed in this article.
If you don’t want to scratch your piece, or potentially leave a mark from the acid, use a black stone plate. These are generally provided with a silver testing kit, or will be sold in the same store. Rub your silver on the surface of the black stone so that it leaves a thick and relatively large deposit on the stone. Aim for a line that is one to one-half inch thick.
Bright Red: Fine Silver Darker Red: 925 Silver Brown : 800 Silver Green : 500 Silver Yellow: Lead or Tin Dark brown: Brass Blue: Nickel
