High -purity gold will not fade under normal circumstances, but some liquid will fade. . The cause of the golden leg color 1. After wearing gold jewelry for a period of time, you can find color change or fading. You can check whether the color of gold jewelry is insufficient. Complaints from the association. 2, the discoloration or fading of the gold jewelry is in contact with the waste and harmful substances in the human sweat and the silver and copper in the gold jewelry, and the chemical reaction will occur, producing silver chloride and copper sulfide, and showing dark black ones Chemical salt. 3, and gold will also have a chemical reaction when it comes to some chemicals. For example: mercury, yellow water, bromine steam, ozone, cyanide, etc. The expansion information
The maintenance method of gold jewelry 1, cleaning gold jewelry, using mild soap and soft brush is the simplest and convenient method. 2, use it with use Water columns can also replace soft hair brushes. 3, do not wear gold ornaments to wash hot springs. If you encounter color deformation, you only need to send it to the silver building for cleaning. 4, avoid heavy work, wear gold ornaments, especially rings. 5, the gold jewelry that is often worn, should be cleaned and checked once a month. 6, do not make pure gold jewelry contact perfumes, hair glue and other high volatile substances. 7. Do not make jewelry contact chemicals and products. 8. Do not collect and wear pure gold jewelry with other jewelry or other metal jewelry, so as not to knock on the surface of the pure gold jewelry. 9. Pure gold jewelry is lost due to sweat or dust in the air. It can be placed in a neutrophil warm water or a commercially available care solution for several minutes, and then gently wipe it with the mass. The precautions with gold jewelry 1. The chemical composition of detergent will change the color of the gold, so you should remove the gold jewelry before doing cleaning. 2. Avoid contact with high volatile substances such as perfume and glue, otherwise it will easily cause gold decoration to fade. 3. When swimming, remove the gold ornaments to avoid chemical changes in the surface layer after encountering seawater or pool water. 4, wrap it in a velvet cloth and put it in the jewelry box to avoid rubbing each other and damage.
I feel that you are likely to be deceived by others. According to the knowledge in the chemistry book, it is difficult for gold to be corroded by other substances, that is, concentrated sulfuric acid is not good. Your cosmetics may not be so powerful. It faded in one week. The surface must be plated with a layer of metal, and light green appears. Now the cosmetics contains trace mercury, which is used to inhibit the growth of the skin. In theory, gold is not react with mercury. Mryphous element cannot be mercury. If you look at it with hydrochloric acid, if you can wash off the light green, it must be fake. I suggest you go to the Institute of Nonferrous Metals, where there is a metal analyzer, and you can detect the metal components soon. Give some hard points
Pay content for time limit to check for freenThe answer to pure gold jewelry is also commonly known as 24K gold, and the gold content reaches 99.9%, but if you want to ask if it will change color, then the correct way of notification is actually: "It is not sure that the pure gold's jewelry will not fade." Gold jewelry may also fade. In everyone's cognition, only impure gold will fade. Why can't pure gold jewelry not guarantee not fading?nIt's not that there is any problem with pure gold jewelry, but now that there are too many items that everyone wears jewelry contact, and the substances contained in the items are also unknown. No well -known jewelry merchant can ensure that their gold and silver jewelry will never fade, but they can ensure that the gold content of their jewelry meets national standards. In fact, the higher the purity of the gold, the better the stability, and the less likely it is to fade, but there are exceptions. As long as there is no 100%positive, then it cannot be completely said that it will not fade. So strictly speaking, all metals will fade, which contains precious metal jewelry such as pure gold, silver, platinum, etc.nNot only pure gold jewelry, but also the 18K gold jewelry commonly used in international big -name jewelry. 18K gold contains 75%of gold and other precious metal jewelry alloys. Metal elements are also rich and there are many colors. 18K gold cannot guarantee non -fading. It is only certain that pure gold jewelry or 18K gold jewelry are not easy to fade than other precious metal jewelry. This is why jewelry is used in gold and platinum.nThere is also a difference between fading. The fading of pure gold is not completely discolored, but a chemical reaction! Chemical reactions can be recovered, not those non -gold jewelry are scrapped once faded. The fading of gold jewelry is a natural phenomenon. The appraisal method is to take the jewelry appraisal agency, and there will be an instrument to analyze all the metal content of the jewelry, so as to determine the true and false.nJust take the ultrasound and wash it.n3 morenBleak
In some cases, gold will change color. It is one of the cases in contact with cosmetics, and there is a situation that is exposed to mercury. Generally, the thermometer rupture contains mercury. I have seen it, which is generally related to the style. The compact style of compact patterns is prone to sweat. If sweat is acidic, it will change the color. The acidic sweat generally brings the silver n It can sell fakes, the chance of fake is very low. If you are not assured, you can find the local quality supervision bureau or jewelry appraisal agency to test it with instruments
If your gold is fake, it means that it is brass. Add a sufficient amount of dilute hydrochloric acid to the porcelain bowl and put the gold in. The density is measured. The density of gold is 19.32 grams / cubic centimeter, which is about double the same volume of silver, lead, and tin. Available formula: The mass (gram) of a certain gold jewelry (gram) is equal to density than the volume (cubic centimeter) of a certain gold jewelry (cubic centimeter). Seeking the density of the gold jewelry measured, the density is about 19.32 grams / cubic centimeter, it is pure gold or relatively pure gold, otherwise it is a non -pure gold or color difference gold (this method has no destructiveness to the jewelry).
High -purity gold will not fade under normal circumstances, but some liquid will fade.
. The cause of the golden leg color
1. After wearing gold jewelry for a period of time, you can find color change or fading. You can check whether the color of gold jewelry is insufficient. Complaints from the association.
2, the discoloration or fading of the gold jewelry is in contact with the waste and harmful substances in the human sweat and the silver and copper in the gold jewelry, and the chemical reaction will occur, producing silver chloride and copper sulfide, and showing dark black ones Chemical salt.
3, and gold will also have a chemical reaction when it comes to some chemicals. For example: mercury, yellow water, bromine steam, ozone, cyanide, etc.
The expansion information
The maintenance method of gold jewelry
1, cleaning gold jewelry, using mild soap and soft brush is the simplest and convenient method.
2, use it with use Water columns can also replace soft hair brushes.
3, do not wear gold ornaments to wash hot springs. If you encounter color deformation, you only need to send it to the silver building for cleaning.
4, avoid heavy work, wear gold ornaments, especially rings.
5, the gold jewelry that is often worn, should be cleaned and checked once a month.
6, do not make pure gold jewelry contact perfumes, hair glue and other high volatile substances.
7. Do not make jewelry contact chemicals and products.
8. Do not collect and wear pure gold jewelry with other jewelry or other metal jewelry, so as not to knock on the surface of the pure gold jewelry.
9. Pure gold jewelry is lost due to sweat or dust in the air. It can be placed in a neutrophil warm water or a commercially available care solution for several minutes, and then gently wipe it with the mass.
The precautions with gold jewelry
1. The chemical composition of detergent will change the color of the gold, so you should remove the gold jewelry before doing cleaning.
2. Avoid contact with high volatile substances such as perfume and glue, otherwise it will easily cause gold decoration to fade.
3. When swimming, remove the gold ornaments to avoid chemical changes in the surface layer after encountering seawater or pool water.
4, wrap it in a velvet cloth and put it in the jewelry box to avoid rubbing each other and damage.
I feel that you are likely to be deceived by others. According to the knowledge in the chemistry book, it is difficult for gold to be corroded by other substances, that is, concentrated sulfuric acid is not good. Your cosmetics may not be so powerful. It faded in one week. The surface must be plated with a layer of metal, and light green appears. Now the cosmetics contains trace mercury, which is used to inhibit the growth of the skin. In theory, gold is not react with mercury. Mryphous element cannot be mercury. If you look at it with hydrochloric acid, if you can wash off the light green, it must be fake. I suggest you go to the Institute of Nonferrous Metals, where there is a metal analyzer, and you can detect the metal components soon. Give some hard points
Pay content for time limit to check for freenThe answer to pure gold jewelry is also commonly known as 24K gold, and the gold content reaches 99.9%, but if you want to ask if it will change color, then the correct way of notification is actually: "It is not sure that the pure gold's jewelry will not fade." Gold jewelry may also fade. In everyone's cognition, only impure gold will fade. Why can't pure gold jewelry not guarantee not fading?nIt's not that there is any problem with pure gold jewelry, but now that there are too many items that everyone wears jewelry contact, and the substances contained in the items are also unknown. No well -known jewelry merchant can ensure that their gold and silver jewelry will never fade, but they can ensure that the gold content of their jewelry meets national standards. In fact, the higher the purity of the gold, the better the stability, and the less likely it is to fade, but there are exceptions. As long as there is no 100%positive, then it cannot be completely said that it will not fade. So strictly speaking, all metals will fade, which contains precious metal jewelry such as pure gold, silver, platinum, etc.nNot only pure gold jewelry, but also the 18K gold jewelry commonly used in international big -name jewelry. 18K gold contains 75%of gold and other precious metal jewelry alloys. Metal elements are also rich and there are many colors. 18K gold cannot guarantee non -fading. It is only certain that pure gold jewelry or 18K gold jewelry are not easy to fade than other precious metal jewelry. This is why jewelry is used in gold and platinum.nThere is also a difference between fading. The fading of pure gold is not completely discolored, but a chemical reaction! Chemical reactions can be recovered, not those non -gold jewelry are scrapped once faded. The fading of gold jewelry is a natural phenomenon. The appraisal method is to take the jewelry appraisal agency, and there will be an instrument to analyze all the metal content of the jewelry, so as to determine the true and false.nJust take the ultrasound and wash it.n3 morenBleak
In some cases, gold will change color. It is one of the cases in contact with cosmetics, and there is a situation that is exposed to mercury. Generally, the thermometer rupture contains mercury. I have seen it, which is generally related to the style. The compact style of compact patterns is prone to sweat. If sweat is acidic, it will change the color. The acidic sweat generally brings the silver
n It can sell fakes, the chance of fake is very low. If you are not assured, you can find the local quality supervision bureau or jewelry appraisal agency to test it with instruments
If your gold is fake, it means that it is brass. Add a sufficient amount of dilute hydrochloric acid to the porcelain bowl and put the gold in. The density is measured. The density of gold is 19.32 grams / cubic centimeter, which is about double the same volume of silver, lead, and tin. Available formula: The mass (gram) of a certain gold jewelry (gram) is equal to density than the volume (cubic centimeter) of a certain gold jewelry (cubic centimeter). Seeking the density of the gold jewelry measured, the density is about 19.32 grams / cubic centimeter, it is pure gold or relatively pure gold, otherwise it is a non -pure gold or color difference gold (this method has no destructiveness to the jewelry).