Will pure silver change color?

What is a sterling silver product? 925 pure silver is 925% silver, which is the standard content of pure silver. Because the texture of silver itself is soft, a small amount of alloying elements should be added to ensure the sufficient hardness of pure silver products. The blackening of silver ornaments is a normal natural phenomenon. Because sulfur and oxides in natural media such as air have a certain corrosive effect on silver, after wearing for a period of time, some tiny spots (silver sulfide film) will appear, which will spread into pieces or even turn black for a long time. Therefore, at present, silver jewelry has some discoloration due to oxidation. The following are some suggestions: First of all, we should strengthen maintenance knowledge: most consumers know that silver will turn black, but they don't know how to prevent it from turning black or what to do if it turns black-this is the fundamental reason why some consumers are unwilling to buy silver ornaments. Therefore, teaching how to maintain and remove the oxide on the surface of silver ornaments and restore the luster of silver ornaments is the guarantee of consumers' confidence in buying. The main points are as follows: ① Don't wear other precious metal jewelry at the same time when wearing silver jewelry to avoid collision, deformation or wear. (2) Avoid contact with water vapor and chemicals, and avoid swimming in clothes, especially in the sea. ③ Wipe it with cotton cloth after wearing it every day, and put it in a jewelry box or bag for sealed preservation. (4) It has been oxidized to black, which can be scrubbed with a soft brush dipped in toothpaste or cleaned with hand sanitizer or detergent. If it is really impossible to clean, brush it with silver washing water and dry it with cotton cloth after washing. -.2. Apply lipstick to the cloth, then wipe the silver ornaments, and finally rinse them with water. This method is absolutely effective. 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 the silver ornaments from blackening for up to one year. Maintenance method of silver jewelry A. When not in use, it can be sealed with a small plastic bag, which can isolate the air and reduce the chance of oxidation, so as to keep the jewelry fresh; B, silver jewelry and other alloy jewelry, try not to contact water and irritating liquid. Silver jewelry needs to be picked when washing hot springs, and can be worn when bathing or swimming at ordinary times, but it is necessary to avoid contact with sulfur soap, hair dye, perm agent and other items that are easy to damage the surface luster of silver jewelry; C, pay special attention to silver ornaments inlaid with stones, and try not to get wet, because there will be gaps in the mosaic joint, and stones will easily fall off when they meet water. D, smooth jewelry can usually be wiped with delicate paper towels or soft cloth, and gently wiped back and forth in the same direction to avoid too many scratches. The best effect is to use a professional silver wiping cloth. E, bright silver jewelry can be washed with silver washing water, please rinse with plenty of water after cleaning. Finally, rub with a small amount of alkaline water (such as soapy water or washing powder water) for a while, then rinse with clear water and dry with a soft cloth. The reason why washing powder is used again is to neutralize the weak acidity of silver washing water, so as to really play the role of silver washing water. F, the silver jewelry made by the old technology can be polished with a silver cloth or toothpaste to restore the brightness. Remember not to use silver washing water to clean, otherwise it will destroy the old process above. G. When wearing a bracelet, you should first wear it from the narrow side of your wrist, and then rotate it around your wrist to the normal position. Don't break it hard, otherwise the stones on the surface of the bracelet may fall or the bracelet itself may be deformed. Cleaning methods of silver ornaments: There are three ways to clean silver ornaments correctly: First, wipe the surface of silver ornaments with professional silver cloth (except platinum plating process). Second, with professional silver washing water, you can use soaking method (except the old process) or wiping method (except the platinum plating process and inlay process), put the silver ornaments in the silver washing water for about three seconds (if the oxidation is particularly serious, it can be put for a longer time), take them out and rub them repeatedly, rinse them with plenty of water, and rub them in alkaline water (such as soapy water); Finally, rinse with clean water. Third, use toothpaste (try to choose the shape of green and transparent rice grains with fine particles to avoid scratching the surface of silver jewelry), put toothpaste directly on the silver jewelry, and add a little water to rub out the foam. If there is a seam, brush it with a toothbrush to prevent foam from entering the seam; Special note: If it is a stone inlay process, avoid washing with water to prevent the stone from falling off. It is recommended to clean with silver cloth.