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Silver ornaments refer to all kinds of decorations made of silver. Silver is one of the precious metals, which is silvery white. Silver ornaments are processed by various processing techniques, and there are many kinds of silver ornaments, which are basically divided into five categories: earrings, necklaces, hand ornaments, foot ornaments and costumes.
After the founding of New China, especially since the reform and opening up, traditional silverware has been loved by many people, especially in some minority areas, such as the silverware industry of Miao nationality. There is also a film of the same name "Silver Jewelry". ?
The cause of silver blackening
First, because everyone's endocrine and physical condition are different, some people's sweat contains more acid, some people have less, and some people's body fluids have high sulfur content. These are all substances that cause the surface of silver ornaments to turn black, so everyone will have different results when wearing silver ornaments, and some people will be as bright as new after wearing them for half a year.
Second, sulfur, nitric acid and oxides in air and other substances (such as eggs and cosmetics) have a certain corrosive effect on silver.
Silver jewelry is worn for a long time, and the combination of sulfur and silver will form a black silver sulfide film on the surface of silver jewelry. At first, it will show some tiny spots, and then spread into pieces, forming what people usually call silver scales, turning black and affecting the surface luster of silver jewelry. People usually mistake it for fading.
It is precisely because of these natural characteristics of silver that silver has a good health care function, and it can neutralize toxic substances in the human body when worn frequently. Silver ion has a strong bactericidal effect, which can kill 650 kinds of germs, and can be used as a tool for poison detection, which is very beneficial to human body. It can also accelerate wound healing, prevent infection, purify water and keep fresh.
As the ancients said, wearing silver is accompanied by health and wealth, and the five internal organs are safe, the mind is calm, and the shock is stopped and the evil spirits are eliminated. In medicine, it has a much greater effect on human health than other precious metals.
Maintenance method
Many people like silver ornaments, but little is known about their maintenance. Some people even think that silver jewelry is difficult to maintain, but it is not. After understanding the reasons why silver ornaments turn black, we only need to spend some time in our daily life to make the silver ornaments we wear last as long as new.
1, silver jewelry should be cleaned before it is put away, and it is best to pack it in a closed bag to prevent oxidation and blackening. If the wearer sweats a lot, he can wipe the surface with a soft cloth every day to keep the luster and remove dirt. It is best to use special silver rubbing cloth for silver ornaments plated with platinum. Silver rubbing cloth can be purchased in silver jewelry brand stores. Note: Silver cloth contains maintenance ingredients and cannot be washed.
2. Daily cleaning of silver ornaments without platinum plating can be done by yourself, such as squeezing some toothpaste, adding some water, wiping with a soft cloth, brushing gaps with a soft toothbrush, and then rinsing with clear water. Don't touch the water on the silver ornaments inlaid with precious stones, so as not to affect the firmness of the glue. It is best to be cleaned by professionals in the store. )
There are many kinds of silver ornaments and different maintenance methods, so we can't generalize them. Many online maintenance methods can only be used as reference. It is best to ask the professionals in the store to avoid improper operation and damage to the beloved silver jewelry.
4, including the exquisite three-dimensional carving of silver ornaments, 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.
5. If you don't handle and collect the silver jewelry after wearing it, it is likely to make the silver jewelry 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.
Silver ornament effect
"Compendium of Materia Medica" records: "Silver scraps are pungent, flat and toxic; Raw silver is pungent, cold and non-toxic. " Because silver ions are easy to combine with sulfhydryl groups in protein, bacteria will die due to inactivation of respiratory enzymes. However, the properties of elemental silver are quite stable, and it is difficult to "release" silver ions. Moreover, protein is also an important part of the human body.
It not only has economic value and elegant appearance, but also can be used as a drug detection tool. Using silver can detect whether food is toxic (this is because silver can easily react with arsenic (As2O3) commonly used in ancient times to generate black arsenic sulfide, but this does not mean that silver can absorb the so-called "toxin"), which is easy for the naked eye to identify.
Before BC, the ancients knew that silver could accelerate wound healing, prevent infection, purify water and keep fresh. It can stop the growth of bacteria, but its other functions cannot be verified. The saying that "jade can prevent corrosion" is just a false conclusion that the ancients did too little research on natural science.
Silver ions have excellent bactericidal effect. Ordinary antibiotics can only act on 6 kinds of bacteria on average, while silver ions can destroy 650 kinds of bacteria. However, silver ions belong to heavy metal ions, and the water disinfected with silver salts is definitely not suitable for drinking.
"The thermal conductivity of silver is the most prominent among all metals, and it can quickly dissipate the heat of blood vessels. Assuming that the thermal conductivity of silver is 65,438+000, that of gold is 53.2, that of iron is 65,438+065,438+0.6, and that of platinum is 8.2, this distinct thermal conductivity can rapidly reduce the heat of blood vessels, which has excellent curative effect in preventing various diseases.
Silver has the function of absorbing toxicity, which is one of the reasons for its discoloration, so it has excellent disinfection performance. This discoloration is only a superficial reaction and can be eliminated with toothpaste or medicine. It can be seen that the importance of silver to health cannot be ignored. This is a common gimmick for health websites to promote silver jewelry.
In fact, most of the heat generated by breathing is excreted through sweat and will not come out of the silver ornaments, because the thermal conductivity of air is not good, and the heat carried by sweat and silver ornaments will eventually be discharged into the air. As for the "bactericidal" effect of silver, it is described above.
References:
Baidu encyclopedia-silver ornaments