The easiest way is to polish it with toothpaste.
Toothpaste contains small particles, and the grinding cost is harmless to teeth and necklaces.
The oxidation blackening of the necklace is formed by the chemical reaction between the material itself and oxygen and water molecules in the air.
For example, iron forms iron oxide and silver forms Ag2O.
Just use toothpaste to remove the oxidizing substances on it. At the same time, if a thin metal layer is plated, the whole metal layer is oxidized, and there is no good way. It is more troublesome to restock such an old one than to buy a new one.
After the treatment, it is recommended to apply transparent nail polish to ensure that it will not be black for a while, but it will turn black again soon.
What should I do if the silver chain is always oxidized and blackened?
Precautions for wearing According to the principle mentioned above, you should pay attention to the following points when wearing silver jewelry: 1. Before wearing silver jewelry, please apply a layer of colorless nail polish to make the surface gloss last. 2. Silver ornaments should be avoided in hot springs or seawater areas. Contact with warm water or sulfide can easily change the surface of silver ornaments. 3. When taking a bath or swimming, be sure to take off the silver ornaments to avoid contact with chemicals such as bleaching powder. When making up, please try to avoid contact between cosmetics and perfume and silver ornaments. 5. During wearing, please try to avoid any other chemical substances touching the silver ornaments to avoid chemical reaction. 6. Wipe the surface gently with cotton cloth or paper towel after each wear to remove moisture and dirt, and then store it in a sealed bag to avoid contact with air. What about black and silver jewelry? If unfortunately your silver jewelry has become seriously discolored and black, please try the following methods: 0. You can try to wipe off the slight black oxide on the surface of silver jewelry with wire drawing glue. 1. You can try to apply a little toothpaste to the surface of the silver jewelry, then scrub it with a toothbrush dipped in warm water, and finally dry it with a soft woolen cloth. 2. When the surface of the silver ornament is slightly discolored due to slight corrosion, you can gently wipe it with detergent or hot medium soap, brush it with a soft brush first, and then dry it with a soft woolen cloth. At this time, the silver ornaments will show their original brightness. 3. Wash with washing powder and warm water, then wet the surface with phosphoric acid solution, and then wipe it with flannel, which can make the silver ornaments cleaner. 4. Silver ornaments are light brown after oxidation, which can be wiped with a soft cloth dipped in a little silver oil, or soaked in silver washing water, or directly wiped with a silver cloth. 5. Soak the silver ornaments in silver washing water for a while, then take them out and rinse them with clear water. 6. Using silver cloth is one of the fastest and most convenient methods; Silver cloth contains silver maintenance ingredients and cannot be washed. The stain produced by wiping is silver and can be used many times. 7. Exquisite three-dimensional silver jewelry, avoid deliberate polishing. 8. Silver ornaments will darken easily if they are not sealed or wiped frequently. 9. The best way to maintain silver jewelry is to wear it every day, because human body oil can make silver jewelry have a natural and moist luster. How to use silver washing water is a common experience for most guests, which is very convenient. It won't take long to get it out of the silver washing water, but there are also many painful experiences to completely reimburse those silverware. It's okay to spend money. Sometimes jewelry may not be available when you go back and buy it! So, if you must insist on using silver washing water, please pay attention to the following steps: 1. Put the silver ornaments into the silver washing water for no more than seven seconds. 2. Rinse with plenty of water immediately after picking it up. 3. Dry with a dry cloth. If you have enough time, you can use a hair dryer to blow the heat, but be careful not to touch it with your hands immediately. 4. Put it back to the temperature and put it in a sealed bag. Or you can wear it. The above are the most important concepts when using silver washing water for silver ornaments. Many bosses who sell silver washing water don't necessarily know how to use it, so they can't make it clear to their guests. Because silver washing water is a corrosive liquid, the most important thing is to remove the oxidized part quickly, but if it is left for a long time, it will corrode the polished part of the surface of silver jewelry, so the jewelry will never return to its original appearance. However, even if it is used correctly, it will still cause great damage to silver jewelry after being used for many times for a long time, and it looks dull. Therefore, when a guest wants to buy silver washing water, we will tell the guest that it is best not to use silver washing water. When there are many ornaments, you can consider a silver polishing cloth (polishing cloth) that won't hurt the silver. The maintenance methods of electroplated and unplated silver ornaments should first distinguish whether there is electroplating or not; (Silver ornaments are generally divided into electroplated and non-electroplated) Electroplated silver ornaments: that is, the inner layer is pure silver, and the surface is being treated with current; Electroplating is generally divided into electrogold and platinum; The way to identify electroplating is that its surface is brighter than pure silver, just like a mirror, which has good reflective effect and is not easy to oxidize (the oxidation time depends on the thickness of electroplating). Electroless silver jewelry: easy to lose luster due to vulcanization. Sulfur dioxide in the air reacts with silver to form a layer of silver sulfide on silver ornaments, which is the same as the apple will slowly turn black after being cut. ). The simple treatment method of electroplating silver jewelry is as follows: 1. First, go to a nearby Chinese medicine shop or drugstore to buy a pack of alum; 2. Boil the silver jewelry you are wearing with a certain proportion of water (the water must be ......
What if the necklace turns black?
Many friends like sterling silver ornaments, but they don't know how to maintain them. In fact, we only need to spend some time in our daily life to make silver ornaments last as long as new. 1, the best way to maintain silver jewelry is to wear it every day, because human oil can produce a natural and moist luster. 2. Don't wear other precious metal jewelry when wearing silver jewelry to avoid collision, deformation or wear. Keep the silver ornaments dry, don't wear them to swim, and don't go near hot springs and seawater. When not in use, you can gently wipe the surface with cotton cloth or paper towel to remove moisture and dirt, and put it in a sealed bag or box to avoid contact with air. If the silver ornaments show signs of yellowing, the easiest way is to gently wash the surface with toothpaste and some water. Or use a small jewelry brush to clean up the fine seams of the silver ornaments, and then gently wipe the surface with a silver cloth, and the original aesthetic feeling of the ornaments can be restored immediately. (If the silver cloth can restore about 80% to 90% of silver, don't use silver lotion and silver washing water, because they are corrosive to some extent, and silver ornaments are more likely to turn yellow after using these products. In addition, silver cloth contains silver maintenance ingredients and cannot be washed with water. ) 5. The silverware is seriously yellow, so it should not be soaked in silver washing water for too long, usually a few seconds. Wash it with clean water immediately after taking it out, and then blot it with paper towels. Common surface treatment methods of silver jewelry _0506 18 Silver is easy to oxidize, which is a defect in its yoga and a headache for consumers and producers. At present, the common silver surface treatment methods in the domestic market are further oxidation, electroplating and untreated. Whether it is further oxidized or untreated, the characteristics of silver oxidation blackening are fully utilized. Using oxidants to deepen the oxidation of the silver surface, or using the natural oxidation of the silver surface to produce richer colors and mechanism effects in silver jewelry, so that the defects are not concealed, is a method of exerting strength. The real way to prevent the surface oxidation of silver jewelry is electroplating. At present, the commonly used methods are silver plating, rhodium plating, palladium plating and so on. The silver jewelry produced by European goldsmiths mainly adopts deep oxidation treatment and sandblasting electroplating treatment. Common knowledge of silver jewelry maintenance _0506 18 Many people like silver jewelry, but they don't know how to maintain it. They even think that silver jewelry is difficult to maintain. That was not the case. The chemical properties of silver are not as stable as platinum and gold, and it is often oxidized to black or yellow by water or other chemicals in the air, losing its luster. After understanding this feature, we only need to spend a little thought in our daily life to make the silver ornaments we wear last as long as new. When wearing silver jewelry, don't wear other precious metal jewelry at the same time to avoid collision, deformation or wear. Keep the silver ornaments dry, don't swim in them, and don't go near hot springs and seawater. After each wear, you can gently wipe the surface with cotton cloth or paper towel to remove moisture and dirt, and then put it in a sealed bag to avoid contact with air. The best way to maintain silver jewelry is to wear it every day, because human oil can produce a natural and moist luster. Contains exquisite three-dimensional silver ornaments made into sculptures to avoid deliberate polishing. If you find that the silver ornaments are yellow, you should first clean up the thin seams of the silver ornaments with a small jewelry brush, and then gently wipe the surface with a silver cloth to restore the original silvery white and brightness. I suggest that if the silver cloth can recover about 80% silver, there is no need to use silver lotion and silver washing water, because these products are corrosive to some extent, and silver ornaments are more likely to turn yellow after using these products. Silver wipes contain silver maintenance ingredients and cannot be washed. If you don't handle and collect the silver jewelry after wearing it, it is very likely that the silver jewelry will turn black. At this time, you should use a small jewelry brush to clean the fine seams of jewelry, then drop a drop of silver emulsion on the paper towel to wipe off the black oxide on the surface of jewelry, and then use a silver cloth to restore the original brightness of jewelry. After that, you should remember to do the daily general maintenance to prevent the silver ornaments from turning black again. It is difficult to rub the silver ornaments white after many times of blackening. These are some basic considerations. Here is a detailed introduction to the maintenance methods of electroplated and unplated silver ornaments: firstly, it is necessary to distinguish whether there is electroplating (silver ornaments are generally divided into electroplated and unplated): electroplated silver ornaments, that is, the inner layer is pure silver and the surface is being treated with current; Electroplating is generally divided into electrogold and platinum; The way to identify electroplating is that its surface is brighter than pure silver, just like a mirror, which has good reflective effect and is not easy to oxidize (the oxidation time depends on the thickness of electroplating). Electroless silver ornaments are easy to lose their luster due to vulcanization (sulfur dioxide in the air reacts with silver to form a layer of silver sulfide on the silver ornaments, just like apples will slowly turn black after being cut). The simple treatment of electroplating silver jewelry is as follows: 1, first ......
What if the gold metal necklace is oxidized? It is black, not precious metal.
1) At first, the golden surface was plated with imitation gold, and the material of imitation gold was generally 70% copper and 30% zinc. The oxidation resistance of copper and zinc is far less than that of real gold. The imitation gold layer on other parts, decorations and signs (signs) shall be protected with transparent paint. Necklaces, anklets, pins, earrings, nose rings, lip rings, belly buttons and other accessories that are in close contact with the skin are not painted and are easy to fade.
2) Before imitation gold electroplating, there are several surface treatment processes to make the metal chain blank very smooth and bright. Therefore, it is suggested that you can use this basic condition to completely fade the necklace with uneven fading, and completely remove the coating by pickling to reveal the white and bright color inside, which can be used for a period of time in cool and dry autumn and winter without sweating. The method is to soak it in 50-80% nitric acid aqueous solution for a few seconds to one minute, then immediately take it out and put it in water for cleaning and drying.
3) Of course, gold imitation by reduction electroplating is the most thorough reduction method, but you may not have this condition.
4) When the imitation gold jewelry is used, the imitation gold layer fades, indicating that its service life has reached. Take it down and keep it as a souvenir.
What should I do if the decorative necklace turns black?
The simplest thing is to use toothpaste.
1. Wipe it clean and put it away.
If the ornaments are not used for a long time, the surface of some ornaments will rust. This is because it contains a small amount of copper. Be sure to wipe it clean with cotton swabs and other things to avoid the corrosion of wet things left on the ornaments, and then put it in a closed sealed bag or packaging box to isolate the air and avoid oxidation, yellowing and blackening of the ornaments.
If you wear it close to your body on weekdays, the oiliness of the human body will also have the effect of oil maintenance, and there will be a warm and natural luster.
Step 2 restore bright colors
Jewelry will turn black due to air oxidation and contact with hot springs or strong acid solutions. Under the long-term wear and tear, jewelry containing K gold will slowly expose its underlying quality to the air. You can use a cotton swab to wipe the shiny, carved or irregular surface of jewelry, and you can gently brush it with a soft toothbrush with a little tooth powder or baking soda powder, which is natural and cheap. After brushing, let the foam adhere to the jewelry for about a minute, then rinse it with clear water and dry it with a soft cloth. You will find that your beloved jewelry has regained its bright color.
3. Do not use products such as oxidized water.
Try not to use oxidized water to clean ornaments, because it will corrode the pure surface, and although it will soon restore brightness, it will soon turn yellow and black. Moreover, every time products such as oxidized water are used, jewelry will be corroded again. For your beloved jewelry, you should pay some attention to using cotton swabs.
What if the gold-plated necklace turns black?
If the necklace is plated with pure silver and platinum in summer, it will be fine within one month, but it is also related to the season. Sweating more in summer makes it easier to generate silver sulfide with sulfur in sweat. Black is the kind that everyone thinks will fade. Spring and autumn usually last for half a year. This necklace is blackened by oxidation. Wipe it with toothpaste and then wipe it with silver cloth, and it will light up. There is also the kind of silver-plated thick gold, which is much better. It won't change color for about a year. The price of that kind of shopping mall is around 100, which is not worth it. Can I buy 5-6 ordinary silver-plated chains? ^_^
The silver chain has been worn for several days. How to treat the surface oxidation blackening?
Wrap the silver chain in tin foil and boil it in a pot for five minutes, and it will be as good as new. Don't ask, thank you!
The sterling silver necklace turned black. How to clean it and change it back to color?
◆ Ten methods of cleaning silver jewelry 1. Soak in Coca-Cola 12 hours. 2. Apply lipstick on the cloth, then wipe the silver ornaments, and finally rinse them with water. 3. Scrub with acetic acid. 4. make tea for one night. 5. Wipe with a silver cloth. 6. Soak in silver washing water for one to two minutes. 7. Apply the correction fluid to the silver jewelry, and wipe the silver jewelry with a cloth before the correction fluid dries. 8. Brush with toothpaste and toothbrush. 9. Burn black silver ornaments with lighter (Note: This method is limited to pure silver (gold-plated and inlaid silver ornaments cannot be used. The temperature should not be too high, so it is forbidden to use matches, because matches contain sulfur, which will turn silver ornaments into silver sulfide, and then polish them with a silver rubbing cloth. This method makes plain silver ornaments particularly bright. 10, Yin Su's silver jewelry is often blackened, although it can be cleaned frequently, but it is also very troublesome. I teach you to prepare a bottle of transparent nail polish before cleaning the silver ornaments, blow dry the silver ornaments with a fan after cleaning, and then coat the cleaned silver ornaments with a layer of nail polish. My client tried this method to keep silver jewelry from turning black for up to one year.
What should I do if the sterling silver necklace does not oxidize and turn black for a long time?
Tips for maintenance of silver jewelry 】 It is normal for silver jewelry to turn black when worn for a long time. You can soak it in ammonia and baking soda water or wipe it with toothpaste, then rinse it with clear water and dry it to restore luster. If you want to make the newly bought silver jewelry brighter and avoid its discoloration, you can apply a thin layer of transparent nail polish on its surface and then apply it every ten days. If you want to remove nail polish, you can soak it in banana oil and then wash it with water. Silver jewelry without antioxidant treatment is easy to oxidize and discolor. You can take it to a jewelry store for cleaning and polishing; If the oxidation is not serious, you can also let toothpaste rub the surface of jewelry; There is a silver polishing cloth on the market, which can easily polish silver ornaments, but only for silver ornaments with certain hardness and smoothness; If it is a soft necklace or carved jewelry, it is best to soak it in silver jewelry cleaning solution. Avoid putting silver ornaments together with hair gel, perfume and skin care products, because this will lead to the weakening of luster; When taking a bath or washing clothes, you should remove the silver ornaments to prevent alkaline products; Prevent discoloration and deterioration due to long-term contact with sulfur and its compounds; When exercising or doing manual labor, you should try to avoid wearing jewelry, otherwise it will easily cause jewelry deformation or damage. Avoid putting multiple ornaments together, because they have different hardness, and should be stored separately in the frame after use to avoid friction and scratch, which will affect the texture; Some drugs will react chemically with silver ornaments and make them deteriorate, so be extra careful when touching drugs.