Often people at home find decorations made of metal, which looks like silver. To accidentally not throw them into the trash can, you need to be able to determine the metal at home. Another ability to determine the authenticity of silver will be required when buying products on the market, because modern technologies allow you to produce high-quality fakes.
Characteristic properties
Silver decoration should have a stamp with a breakdown. But sometimes it is not a guarantee of authenticity.
You can define silver using simple ways:
- Take a silver decoration in your hands, pull it out. If it remains clean, then it is high quality silver. Dark raid on his arms means that silver was mixed with zinc.
- If you have a good rumor, then throw the product to hit the surface. A ringing, vibrating and loud sound means the authenticity of the product.
- Spend a product magnet. Silver is a diamagnet, so it does not attract a magnet.
The above methods can be carried out without any special devices.
Tests with additional devices
The following experiments are carried out to detect authenticity:
- Chalk. Turn the product with chalk, and study the condition of the material. Dark chalk is a sign of silver.
- Lyapis pencil. Throw the product. If a few minutes, the metal will darken, then it is real. On the inside of the product to make scratches using the needle. If under the top layer is a metal of another color, then this is not silver.
- The pharmacy device "Silver Test" will help to identify fake.
- Iodine. Upon joining the reaction of iodine and metal in the form of a light plaque - this is 100% fake.
- Sulfuric ointment. If this substance is aware of this substance, then a blue spot will appear. It can be easily erased.
- Hydrostatic weighing. Take the exact scales and weigh the product, defining a dry mass. Then place in water and determine the weight in the water. Then the dry mass is divided into the difference of masses and the density of silver is obtained - 10.5. If the indicator is 7, this is tin.
Appearance
Experienced specialists can identify silver in appearance:
- This silver-white metal has excellent lifestyle, so it glitters. Over time, he dumps and darkens, acquires a pink shade.
- If you lose silver, then its color does not change.
- Silver has a good thermal conductivity, so if the product is in hand, its temperature almost immediately becomes the same as the body temperature.
- Silver is denser by aluminum, therefore heavier. The zinc is added in the product, which leaves the flare on the hands.
Chemical test
If the silver product does not have any stamp, then you need to use this method. In everyday life, this method is rarely applied. It is popular among jewelers and laboratory workers. If you still decide to spend a test at home, you will need a repetitive called "Silver test" and gloves, because there will be a contact with caustic acids.
Realization scheme:
- Remove the coating layer with the appropriate. In order to avoid scratches, you can use the brief stone. Clean the stone before the metallic balance appears on it.
- Prepare nitric acid and sodium bichromate, connect them in equal proportions.
On the metal layer drip acid. Get polished and brilliant surface. - To identify samples, you need to pay attention to the color of the surface where the acid got:
If it is a bright red shade, then it is pure silver, if dark red, then 925 sample, brown, then 800 sample, green, then 500 sample, yellow is tin and lead, blue - nickel, and dark brown - brass.
These simple methods will help identify silver authenticity. But it's not necessary to organize at home the tests for the definition of authentication. It is enough to visit Lombard, evaluate the product and get away from there, as if the price did not suit you. But for greater confidence, such purchases must be made certified salons, and not with hands.
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