Many silver necklaces bought by friends have turned black after a long time, so I wondered how the silver necklace would turn black. Why did the silver necklace turn black? Is there any solution? What is the way to prevent the silver necklace from getting dark ? Next, Xiaobian will answer all of you. The reason why the silver necklace turns black Silver, long-term exposure to the air will produce a layer of oxide, losing the surface gloss, which is the oxidation of silver. In the case of the same amount of silver: the oxidation rate is different because the oily sweat will accelerate the oxidation rate of the silver surface during the wearing process and act as a catalyst. At the same time, weather, temperature, humidity, and regional differences will also affect the rate of oxidation of silverware; in the case of different amounts of silver: the higher the silver content, the faster the oxidation rate of silver (99 silver), the oxide generally turns from yellow to red. Blackening; the international standard silver (925 silver) has a slower oxidation rate than high silver (99 silver), and the oxide is generally black. Silver oxide oxidation is a normal phenomenon. Silver necklace blackening solution 1. Purchase a pre-purchase package of alum for the first time in the nearby Chinese pharmacy or pharmacy; 2. Then boil the silver jewelry you wear in proportion to the ground (water a little (not much meaning) to boil); 3. Remove the silver jewelry and put it into cold water with a soft brush (like a toothbrush) with a toothpaste or laundry detergent or a salad remover; 4. Blow dry with a hair dryer, then wipe with a suede to be as beautiful as new. The method of processing electroless silver jewelry should pay attention to the following points: 1. The fine position of the necklace or the fine silver "overfire" can not stay in the same position for too long; 2. After the silver jewelry has “overfire†inlaid with gems, it cannot be directly immersed in cold water, and it must wait for its natural cooling, otherwise the gemstone will be easily broken; 3. Fine silver jewelry can be used when cleaning iron brush, the effect is better (only fine silver, you can use the iron brush to clear the first); 4. You can wipe it with silver cloth or silver powder during normal maintenance. If your jewelry can't be wiped with silver cloth or silver powder, you can use the above method (you can't use silver cloth or silver powder to wipe the ground) You haven't been maintenance for a long time? Sigh!) Don't use silver or silver paste. It's just a way to make your jewelry shine with chemical syrup. The syrup is harmful to the human body, and the effect is worse than once. Damage to the silver trim is like cutting off the apple skin; 5. The method we provide is to teach you to maintain the integrity of this apple in the most natural way. If you have any questions, please feel free to write or call us. There is also a silvery light that is raised here. For your reference: If you want to make the silver jewelry more shiny and avoid blackening, you can apply a thin layer of transparent nail polish on the surface, and then apply a full stop every ten days. Just like removing nail polish, soak it in banana water and wash it with water to complete the period. To completely prevent the silver necklace from getting black is to pay attention to the following points when wearing: 1. The best maintenance method for silverware is to wear it every day, because the body oil can produce a natural and lustrous luster. 2. Do not wear other precious metal jewelry at the same time when wearing silver jewelry to avoid collision deformation or scratching. 3. Keep the silverware dry, don't wear swimming, don't approach hot springs and sea water. When not in use, wipe the surface with cotton or tissue, remove moisture and dirt, and place it in a sealed bag or box to avoid contact with air. Some friends think that the reason why the silver necklace turns black is because their physical condition is not very good. In fact, you don't have to worry. If you look at the above, you will know that the silver necklace is black because it is oxidized in the air for a long time. The reason is that blackening is a normal phenomenon. As for the prevention methods and solutions, I believe that everyone will have a deep understanding of the above detailed introduction!
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July 15, 2020