Why is it black with gold necklace?

The gold necklace has been with more than a month, and it becomes black in the next three weeks. Why is this?

5 thoughts on “Why is it black with gold necklace?”

  1. 1. The oxidation reaction occurs in the contact with the water chain and water.
    If you bring the gold necklace while 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.
    2, the gold necklace and sweat contact have a chemical reaction.
    The second thing to notice is that many people do not like to take off the jewelry on their bodies while exercising. People now pay attention to health and exercise appropriately every day. The metabolism is accelerated during exercise, so it will continue to sweat. Some substances contained in our sweat can chemically react with the gold necklace, which makes the gold necklace becoming unable to shine.
    3, long -term contact with cosmetics and skin care products.
    Makeup is a respect for people, and it can also make women look more confident and beautiful. But when we make up, it is best to take off the necklace first, and then bring the necklace up after making makeup. Because in the process of makeup, it is easy to make cosmetics and skin care products on the necklace. Some ingredients in cosmetics may also have a chemical reaction with gold, causing the gold necklace to be black.
    The expansion information:
    The maintenance of the gold necklace:
    1. First store the gold jewelry alone in the jewelry box or suede, and develop the habit after finishing the habit Put it together to prevent scratches between each other.
    2, regularly clean the gold jewelry. 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.

    3. For gold jewelry alum inlaid, it takes every six months to clean. 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.
    4. If there is scratches 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. If this happens, bring platinum jewelry to the qualified jewelry dealers to re -polish them to produce extremely bright effects.
    5. When conducting housework, gardening, and other types of heavy work or physical activity, please do not wear gold accessories. Because women are easily exposed to bleaching or irritating chemicals when wearing gold jewelry. Although they do not harm gold, chemicals may change diamonds or gems.
    6. 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-Gold Necklace
    Reference materials Source: Baidu Encyclopedia-necklace

  2. In the process of wearing gold jewelry, most people will find that we have been worn for a long time, and there will be fading and blacking. Therefore, many friends will doubt whether they have bought fakes.

    For example, for example, a few days ago, a friend of Xiaozhi said that the gold jewelry I just bought was particularly dazzling, but it won't be long, the gold jewelry has no previous glory, or even there is even some, or even there are even some, or even there are even some, or even there are even some, or even there are even some, or even there are even some, or even some, or even some, there are even some. It will be dark, do you know why?

    The impact of the regional environment
    The air contains more miniature dust. These subtle dust will erode gold jewelry, causing black stains in local and places. In addition, some of the commonly used body powder and moisturizing cream can also make gold jewelry barely.

    The harmful substances discharged from the human body
    The harmful substances such as waste, lactic acid excreted in the human body, contact silver or copper in gold jewelry or copper After that, a chemical reaction was generated soon and caused very obvious black stains on gold jewelry.

    The substances contained in cosmetics
    It cosmetics contained some fine hard particles. Dirt will appear to wear gold jewelry.

    But not all golden hair black is caused by these reasons, because some cases are indeed fake in gold. Let me teach you some maintenance methods.
    The daily maintenance method of gold
    1. When wearing, avoid collision and scraping to prevent gold jewelry deformation.
    2. Do not wear it when doing housework or heavy work or exercise, so as not to deform and wear gold jewelry.
    3. Avoid contact with chemical reagents, such as mercury, lead, etc., so as not to damage the surface of the gold jewelry.
    4, sweating in summer, in order to reduce the corrosion of sweat, it is necessary to clean it frequently. You can go to the jewelry shop you purchased to clean it. It is free, or you can wash it with water and soft cloth yourself.
    5. Avoid contact with corrosive items, such as cosmetics, perfumes, vinegar, bleaching agents, modified solution, etc., as well as chemicals such as lead and mercury, so as not to corrode the surface of gold jewelry and cause discoloration.
    6, precious metal jewelry should be avoided or collected together, preventing them from rubbing each other, which causes the beauty of jewelry to be damaged and affects the beauty of the jewelry. Precious metal jewelry of different ingredients should pay attention to wearing them separately to prevent it from being caused by mutual frictions. The colors occur between jewelry.

  3. Pay content for time limit to check for freenAnswer dear, good morning, I am glad to answer for you. Please wait patiently for a while and give you a reply immediately.nBlack with a gold neck chain is mainly related to improper wearing. After encountering mercury, the gold will have a chemical reaction, forming a yellow -and -white substance 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.nIn addition to the 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.nIn order to avoid such disputes, Jindian merchants should explain the correct use and preservation method of gold decoration to consumers. 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.nExtended information: Why is the neck with a golden necklace turning black may be caused by friction, and 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.nThe second reason 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.nI hope my answer is helpful to you, and I wish you a happy life. If you are satisfied with the answer, please praise the lower left corner. Thank you. ❤️ ️ ️n5 morenBleak

  4. Because gold is also metal, oxygen and sweat will corrode all metal substances. The corrosive characteristics of gold are hacking for a long time, avoiding direct contact with high volatile substances such as perfume and hair glue, otherwise it will easily cause gold decoration to fade. How to deal with it, the best way to clean the super simple solid gold jewelry is to use ammonia water. The method is to pour some pure water in a small bottle, then drop a few drops of ammonia, and put the gold jewelry in a small bottle shake a few times. Or use your own toothpaste, or you can

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