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There is no pure black in silver, its color is silvery-white, if it appears black, it means that it is fake.
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There is no pure black in silver, but silver is silvery-white. As the saying goes, real gold**.
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There is no pure black in silver, but the color of silver is silvery-white. Pure black is certainly not real silver.
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Yes, the silver is oxidized by the air and becomes black.
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Win will turn black when it encounters air oxidation, but it will turn white again after cleaning, and if it is deliberately made black, I think it is just to make a gimmick.
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There is pure black in the human heart. There is no silver. If it is too old, there will be a layer of gray floating rust.
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Silver oxidizes to turn black.
Just because silver turns black doesn't mean it's fake. The silver ornament also turned black as it grew longer. The causes of darkening are:
1) Everyone's endocrine structure is different, some people's sweat contains more acid, some people have less, some people's ammonia content is higher, so wearing silver jewelry produces different results, sour is easy to black, non-sour is not easy to black, and even some people with strong oil secretion will bring their silver jewelry to shine.
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I know there are pure white, but I've never heard of pure black. Unless something oxidizes it, the color will be black, but it is not pure black.
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Silvery-white, of course silver is white, and the black you say should be mud stuck to the silver ingot.
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The purity of the blackening of silver has little to do with it, but is determined by the environment in which it is stored.
The chemical properties of silver are relatively stable, and the ability to resist corrosion is also strong. However, sulfur, nitric acid and oxides in air and other natural media have a certain corrosive effect on silver. Silver jewelry may form a layer of black silver sulfide on the surface of silver jewelry after a long period of wear.
Because silver sulfide is gray-black, with the intensification of the reaction, the silver sulfide increases and thickens, and the surface color gradually changes from white to yellow to gray and finally black.
Therefore, when there are more sulfur, acid and other substances in the environment where the silver is stored, the silver will turn black faster, and vice versa.
Precautions for wearing silver jewelry:
1. Do not wear other jewelry at the same time when wearing silver jewelry, so as to avoid collision, deformation or abrasion.
2. Avoid contact with water vapor and chemicals, and don't swim with them on, especially when you go to the sea.
3. If you want to make the newly bought silver jewelry more shiny and avoid its discoloration, you can apply a thin layer of transparent nail polish on its surface, and then apply it again every ten days. To remove nail polish, soak in banana water and wash with water.
4. Avoid putting it together with hairspray, perfume, and skin care products, as this will cause a loss of shine.
5. When bathing and washing, the silver jewelry should be removed to prevent the jewelry from encountering alkali products.
6. Prevent discoloration and deterioration caused by long-term contact with sulfur and its compounds.
7. When exercising and doing physical work, you should try to avoid wearing jewelry, otherwise it is easy to cause the jewelry to be deformed or broken and lost.
8. Multiple pieces of jewelry should be avoided together, because their hardness is different, and they should be stored separately after use, so as not to rub and scratch and affect the texture; Some medicines are capable of chemical reactions on silver jewelry, causing the jewelry to deteriorate, and you should be extra careful when touching the medicine.
9. In addition, because some silver jewelry is mixed with some amphibole and glitter, it is necessary to pay attention to the cleaning after each use. Clean water is not enough to wash glitter or sparkle on the body, as these products are mostly made of waterproof and sweat-resistant materials.
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Silver is divided into 925 silver and sterling silver, but no matter what kind of silver is oxidized, it will turn black. If it is not oxidized, on the one hand, it proves that you keep it better, on the other hand, it is not silver, if the silver jewelry is oxidized, you can wipe it with a silver cloth to restore its original luster
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It can be washed with toothpaste, and it works very well.
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Summary. Dear, silver is divided into 925 silver and sterling silver, but no matter what kind of silver is oxidized, it will turn black.
Silver, it will turn black after a long time, is it silver, the purer it is, the easier it is to black, or is it impure that it will be black?
Dear, silver is divided into 925 silver and sterling silver, but no matter what kind of silver is oxidized, it will turn black.
Dear, silver blackening is oxidation, whether silver will turn black has little to do with purity, even if it is silver-plated, it will turn black, sterling silver too. The reason why the silverware does not turn black may be that it is stored in a dry, well-ventilated environment, or for a short period of time.
Dear, this has nothing to do with purity, as long as you keep it well, it will not be oxidized. Thank you.
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Silver will turn black.
The blackening of silver jewelry is mainly due to oxidation, and when silver is exposed to the air for a long time, a layer of oxide will form on the surface, resulting in the loss of its original color. In addition, due to the fact that a large amount of sweat and oil stains will appear on the ** during wearing, it will also accelerate the rate of oxidation on the surface of silver jewelry.
The best way to care for sterling silver jewelry is to wear it every day, as body oils can produce a natural warm luster. When wearing silver jewelry, do not wear other metal jewelry at the same time, so as not to collide with deformation or scratches. Keep your sterling silver jewelry dry, don't swim while wearing it, and don't approach hot springs and sea water.
When not in use, gently wipe the surface with a cotton cloth or tissue paper to remove moisture and dirt, and then place it in a sealed bag or box to avoid contact with the air.
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It will turn black because the sulfur, nitric acid and oxides in the air will have a certain corrosive effect on silver.
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Silver will turn black when it oxidizes over time.
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