Do you want to know why silver is getting dark around your neck?

Silverware, located in the windows of jewelry stores, beckon with its beauty and extraordinary brilliance.

But this mysterious metal for some reason darkens,when it starts to be worn on the body. What is the reason? Why is the silver on the neck dark? Did the silver darken because of the illness? You can try to answer these questions by contacting the school chemistry program. It is easy to recall that as a result of the reaction of silver with sulfur, silver sulphide is formed. It is he who gives the blackening.

Composition of a silver product

As you know, jewelry has a trial,thanks to which you can understand that, besides silver, there are other metals, in particular - copper. The lower the sample of the product, the more copper in it. Copper, reacting with sulfur, which is in the sweat of man, oxidizes, causing a darkening of silver. The least oxidized products are 999 samples. And most of all with 875 breakdown. If the mistress has two jewelry: a chain and a bracelet, but the chain has darkened. Why does the silver darken in the neck, and

on the arm or a hand?This may be due to a surge of hormones and, naturally, a large sweating in the neck and décolleté, where the largest accumulation of sweat glands. There is an oxidation reaction with the chain, and on the wrist, where the bracelet is located, sweat does not stand out. There is no darkening of the silverware.

Diseases of man and silver products

But not always a person sweats, but neverthelessthe silver product darkens. Then why is the silver on the body dark? Perhaps the cause of darkening is associated with human health. There is an opinion that the owner of the product has health problems, namely, with the kidneys and liver, if the silverware has darkened. There is an occasion to consult a doctor to conduct an examination of the body. And if the silver lightened? Lightens silver upon contact with nitric acid, which is formed as a result of the subsequent release of nitrogenous substances. This indicates a poor kidney function. If the examination at the doctor did not confirm the disease of the body, and the owner of the silver product does not sweat, then why does the silver darken on the body?

What else affects the darkening of silver

It is necessary again to turn to chemistry and remember,that silver, in contact with sulfur forms a sulphide, but sulfur is present not only in the sweat that is given out by the person. Silver, in contact with hydrogen sulphide, which is part of the air, darkens. Tarnishes this metal when in contact with onion, table salt, egg. Women use facial and décolleté creams, which contain protein supplements, which is why the silver on the neck darkens. The chain contacts the body, moistened with cream. This is sufficient for the oxidation reaction. So it turns out that someone bought a silver product and wears it for years, and it's like a new one, and someone bought a product in a couple of months darkens. As it turned out, everything depends on the aggressive environment in which the person resides. And it became clear why the silver is getting dark at the neck and not only. Fortunately, silver can be cleaned at home, and it will shine like new. But that is another topic.