My necklace brought her neck black for a long time. What is going on?
5 thoughts on “Why does the neck with a golden necklace become black”
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My necklace brought her neck black for a long time. What is going on?
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Black with a gold neck chain is mainly related to improper wearing.
The chemical reactions will occur after the gold encounters mercury, forming a yellow -and -white material attached to the gold jewelry, and the gold jewelry is like fading. The color of gold cannot reach 100%, which contains more or less other metal elements. These metal elements may also have a chemical reaction with other materials, resulting in gold discoloration.
In except for practitioners in the chemical industry, ordinary consumers may also be exposed to mercury -containing items, such as mercury -containing cosmetics. After the summer, high temperature weather leads to more sweats in the human body, and the position of the neck and wrist is more likely to sweat, which may cause golden discoloration. Consumers should avoid long -term contact with acidic, alkaline substances and sweat stains, and take the gold decoration as much as possible when taking a bath.
It gold shop merchants to avoid such disputes, they should explain to consumers the correct use and preservation method of gold decoration. If the gold becomes dark or fade, consumers can find the brand after -sales department to clean and maintain. If you want to identify authenticity and or not, you need to find authoritative testing agencies. Real gold is not afraid of burning. Gold smoked black.
Extension information:
why the neck with a golden necklace becomes black, which may be caused by friction, and the jewelry is caused by oxidation.
The first reason is that jewelry is not pure gold, and is gold -plated or other metal necklaces. After the precious metal is oxidized in the air, after rubbing with the skin, it will slowly stay on the skin. At this time, the skin and jewelry contact will appear black, or blue and black.
The second cause of skin allergies, dark and itchy skin. At this time, you must consider whether you are sensitive skin, and think about whether you have allergens.
The third reasons should be cleaned. Pure gold jewelry will give us the illusion of "rust". The surface of the jewelry will have black or red spots. This is because jewelry is contaminated by external chemicals or dust, not the gold itself rust.
The reference materials Source: People's Daily-Total value 780,000 yuan Gold decoration is dark or related to improper wearing
Reason:
1. After wearing gold ornaments for a long time, it will have a chemical reaction with the sweat secreted by the human body, produce gold oxidation, and generate black substances. Over time, the surface of the gold is covered by black materials! The neck turns black, the "gold necklace" is gold -plated, and the gold content is quite low. The gold powder is dropped on your neck. Can be oxidized, so the neck turns black.
2. With the gold necklace when taking a bath, the gold necklace may have a chemical reaction with some chemicals in the shower gel or shampoo, causing golden hair. Although the environment is a relatively stable substance, in addition to gold in gold jewelry, it also contains silver or copper. These elements are easily oxidized with other substances in the outside world, which turn black.
Pucting information:
Gold necklace maintenance method:
1. Clean the gold jewelry regularly. This ensures the best luster of the jewelry and is more durable. The method of cleaning gold jewelry is the same as other valuable jewelry; the jewelry cleaner sold on the market, or immersed it in a solution of soap and drowns, and then gently wipe it with a soft cloth.
2. For the gold jewelry alum inlaid, it takes six months to clean it every six months. The jewelry dealers are adjusted, corrected, polished, and cleaned by the qualified jewelry dealers. In order to professional maintenance of your gold, we must first ensure that the jewelry dealer has a trained gold fitter.
3. If there is a scratch visible to the naked eye, please bring the gold jewelry to the qualified jewelry dealer for polishing. All valuable metals may leave scratches, and gold is no exception. However, natural oxidation layers will appear on the surface of the gold, so many people may prefer the surface that has just been polished. If this happens, bring your platinum jewelry to the qualified jewelry dealers and let them re -polish it to produce extremely bright effects.
4. It is best not to wear or reduce the time of wearing gold jewelry in summer, because often sticking or soaking in sweat will make blond hair black, and some women will cause itching or allergic symptoms for this reason.
Reference materials Source: Baidu Encyclopedia-necklace
Reference materials Source: Baidu Encyclopedia-Gold Necklace
The reason for turning the gold neck of the gold neck chain may be that jewelry is not pure gold, and it is gold -plated or other metal necklaces. After the precious metal is oxidized in the air, after rubbing with the skin, it will slowly stay on the skin. At this time, the skin and jewelry contact will appear black, or blue and black.
The second cause of skin allergies, dark and itchy skin. At this time, you must consider whether you are sensitive skin, and think about whether you have allergens.
The third reasons should be cleaned.
It pure gold jewelry will give us the illusion of "rust". The surface of the jewelry will have black or red spots. This is because the jewelry is polluted by external chemicals or dust, not the gold itself rust.
In the following steps to judge the cause of black:
The first step, go to the nearby big gold shop or a considerable gold shop for gold jewelry content testing, if it is not a pure gold jewelry, then handle it by itself. If it is pure gold jewelry, it is pure gold jewelry. By the way, clean it for free in the golden shop.
The second step, the allergic source investigation, if you have itching symptoms, apply dermatitis or aspirin first.
After wearing gold, the gold jewelry will have a chemical reaction with the sweat secreted by the human body, produce the oxidation of gold, and generate black substances. Over time, the surface of the gold is covered by black materials! The neck turns black, the "gold necklace" is gold -plated, and the gold content is quite low. The gold powder is dropped on your neck. Can be oxidized, so the neck turns black.
This: The neck is prone to sweating than other parts, and the results of sweat and metal reaction are mostly oily skin.
If it is determined that gold is purchased in a large gold shop, it is not a matter of gold. It may be physical reasons. Some people are allergic to metal. My gold necklace sometimes has black necks, but occasionally, I also bought it in a famous brand gold shop. , Quality is okay, the ring, the bracelet does not have this phenomenon,