Silver is the first metal which was first smelted from ore. It comes from ancient Egyptian empire used and has been forged in household utensils, jewelry, etc. Pure silver is smooth as gold, copper usually alloyed to straighten his strength and can be used for making the production equipment and other items.
The most obvious way to know pure silver, and the extent to which it is pure, is to check on your silver jewelry and silverware
Tips to determine purity of silver Or How to test silver
1. Test with a magnet , In the specially using a strong magnet, such as the magnet made of neodymium. Silver is paramagnetic and shows only a weak magnetic effect. If magnet very strong sticking on metal, it has a ferromagnetic core and is not silver.
Note that this method has the potential to damaging silver element.
If you do not want your piece scratch, or potentially leave a mark from the acid, you can use a black stone slab. These are generally made with a silver testing kit available. Rub your silver on the surface of the black stone, so that it leaves a thick and relatively Large deposit on the stone. Goal for a line that one thick one-half inch.
Be sure to follow the instructions and color of your specific silver test. In common, the color scale is as follows:
Darker Red: 925 Silver
Brown : 800 Silver
Green : 500 Silver
Yellow: Lead or Tin
Dark brown: Brass