5 thoughts on “Why does gold jewelry become black”
Olivia
The situation of gold jewelry becomes black and the human sweat cannot be removed. If you are careful, you will find that the color changes in summer jewelry will be more than winter. This is because the human body metabolism is fast in summer. Waste, such as chlorine substitutes, urea ammonia, etc., these elements have a chemical reaction with gold jewelry BOC or copper contact, which will produce silver chloride and copper sulfide, and there will be accompanied by dark black chemical salt Black stain. has nothing to do with purity, don't worry. Extension information: Golden jewelry Gold jewelry refers to jewelry made of gold as the main raw material. The chemical symbol of gold is AU, with a gravity of 17.4 and Mo's hardness is 2.5. Gold jewelry can be divided into two categories: pure gold and K gold in terms of gold content. The gold jewelry has a gold content of more than 99%, up to 99.99%, so it is also known as "nine nine gold", "full gold", and "red gold". In order to overcome the shortcomings of high gold price, low hardness, single color, easy wear, and unspoken pattern, some other metal elements are usually added to pure gold to increase the hardness of jewelry gold and change its tone and reduce its melting point. The gold -alloy jewelry with different color heights and obviously different gold content, the term "karat" is crowned. k gold system is the international popular golden measurement standard. The complete statement of K gold is "Karat Gold" and gives K gold with accurate gold content standards, thus forming a series of K gold jewelry. The maintenance method 1. The chemicals of cleaning essence will change the color of the gold, so you should take off the gold jewelry before doing cleaning.
2. Avoid contact with high volatile substances such as perfume and glue directly, 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, use a velvet cloth to wrap it in the jewelry box during storage to avoid rubbing and damage to each other. 5, gold is soft and easy to deform, so do not pull the necklace and other accessories to avoid deformation. 6. Pure gold jewelry will have a chemical reaction when it encounters water and silver, and white spots appear. When cleaning, you can restore the original color as long as you grill under the alcohol lamp for a while. 7. The gold jewelry after wearing is often lost due to the stains and dust stains. At this time, as long as the gold decoration is placed in the neutral dishwashing agent, soaked and washed with warm water, and then removed and wiped it. Reference materials: Baidu Encyclopedia-Golden Jewelry
Answer: The cause of gold jewelry black and hazardous substances, lactic acid, urea ammonia, etc. in the human body, which will generate chemical reactions with silver and copper in gold jewelry, producing dark black chloride Silver and copper sulfide, this chemical salt sometimes falls from gold jewelry, and will also pollute the skin of the wearer, leaving very obvious black stains. The gold in the gold jewelry will be wearing less and less gold in gold jewelry, but the consumption of this quality cannot be seen. At present, cosmetics have become one of the "characters" for people's lives. If it is applied to the skin of the gold jewelry, it will undoubtedly provide opportunities for cosmetics containing chemicals and the golden jewelry that is most afraid of chemical erosion. The results can be imagined. Some cosmetics also contain some fine hard particles, which can form another type of dirt, thereby wear gold jewelry.
The expansion information: gold jewelry refers to jewelry made of gold as the main raw material. The chemical symbol of gold is AU, with a gravity of 17.4 and Mo's hardness is 2.5. Gold jewelry can be divided into two categories: pure gold and K gold in terms of gold content. The gold jewelry has a gold content of more than 99%, up to 99.99%, so it is also known as "nine nine gold", "full gold", and "red gold". In order to overcome the shortcomings of high gold price, low hardness, single color, easy wear, and unspoken pattern, some other metal elements are usually added to pure gold to increase the hardness of jewelry gold and change its tone and reduce its melting point. The gold -alloy jewelry with different color heights and obviously different gold content, the term "karat" is crowned. The K gold system is the international popular gold metering standard. The complete statement of K gold is "Krat Gold" and gives K gold with accurate gold content standards, thus forming a series of K gold jewelry. Reference materials: Baidu Encyclopedia Gold
Pay content for time limit to check for freenAnswer the environment of wearing will also affect. If the environment is too dry, there are many slender dust in the air. When it is contaminated by the human body, it will constitute a "human sandpaper", which will erode gold into extremely slender debris and turn black. Honey
Why do some people wear gold jewelry? Xiaohan tells you the answer. If the gold jewelry is dirty, how can you maintain it to ensure the light? Xiaohan tells you gold jewelry gold cleaning authentic gold precious metal gold jewelry maintenance n00:00 / 04: 2570% shortcut keys to describe space: Play / suspend ESC: exit full screen ↑: increase volume 10% ↓: reduced volume decrease by 10% →: single fast forward 5 seconds ←: single fast retreat 5 seconds Press hold down and hold it down. Here you can drag no longer appear in the player settings to reopen the small window shortcut key description
1. Over time, gold jewelry has no shiny daily wear or environmental factors that can make gold jewelry lose its bright color. . For example, the dry area contains more minimum dust in the air. After the human body is contaminated, it will form a "human sandpaper". Essence 2, the reasons for the black jewelry of the gold jewelry, the waste and harmful substances in the human body, chlorine substitutes, lactic acid, urea ammonia, etc., will cause chemical reactions with silver and copper in gold jewelry, producing dark black silver chloride. With copper sulfide, this chemical salt sometimes falls from gold jewelry, and it will also pollute the skin of the wearer, leaving very obvious black stains. 3, the less gold in the gold jewelry will be wearing less and less gold in gold jewelry, but the consumption of this quality cannot be seen by human eyes. This expansion information: This tips to prevent gold jewelry from hacking: 1. The chemicals of cleaning essence will change the color of the gold, so you should take off the gold jewelry before doing cleaning. 2. Avoid contact with high volatile substances such as perfume and glue directly, 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, use a velvet cloth to wrap it in the jewelry box during storage to avoid rubbing and damage to each other. 5, gold is soft and easy to deform, so do not pull the necklace and other accessories to avoid deformation. 6. Pure gold jewelry will have a chemical reaction when it encounters water and silver, and white spots appear. When cleaning, you can restore the original color as long as you grill under the alcohol lamp for a while.
The situation of gold jewelry becomes black and the human sweat cannot be removed. If you are careful, you will find that the color changes in summer jewelry will be more than winter. This is because the human body metabolism is fast in summer. Waste, such as chlorine substitutes, urea ammonia, etc., these elements have a chemical reaction with gold jewelry BOC or copper contact, which will produce silver chloride and copper sulfide, and there will be accompanied by dark black chemical salt Black stain.
has nothing to do with purity, don't worry.
Extension information:
Golden jewelry
Gold jewelry refers to jewelry made of gold as the main raw material. The chemical symbol of gold is AU, with a gravity of 17.4 and Mo's hardness is 2.5. Gold jewelry can be divided into two categories: pure gold and K gold in terms of gold content.
The gold jewelry has a gold content of more than 99%, up to 99.99%, so it is also known as "nine nine gold", "full gold", and "red gold". In order to overcome the shortcomings of high gold price, low hardness, single color, easy wear, and unspoken pattern, some other metal elements are usually added to pure gold to increase the hardness of jewelry gold and change its tone and reduce its melting point. The gold -alloy jewelry with different color heights and obviously different gold content, the term "karat" is crowned.
k gold system is the international popular golden measurement standard. The complete statement of K gold is "Karat Gold" and gives K gold with accurate gold content standards, thus forming a series of K gold jewelry.
The maintenance method
1. The chemicals of cleaning essence will change the color of the gold, so you should take off the gold jewelry before doing cleaning.
2. Avoid contact with high volatile substances such as perfume and glue directly, 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, use a velvet cloth to wrap it in the jewelry box during storage to avoid rubbing and damage to each other.
5, gold is soft and easy to deform, so do not pull the necklace and other accessories to avoid deformation.
6. Pure gold jewelry will have a chemical reaction when it encounters water and silver, and white spots appear. When cleaning, you can restore the original color as long as you grill under the alcohol lamp for a while.
7. The gold jewelry after wearing is often lost due to the stains and dust stains. At this time, as long as the gold decoration is placed in the neutral dishwashing agent, soaked and washed with warm water, and then removed and wiped it.
Reference materials: Baidu Encyclopedia-Golden Jewelry
Answer:
The cause of gold jewelry black and hazardous substances, lactic acid, urea ammonia, etc. in the human body, which will generate chemical reactions with silver and copper in gold jewelry, producing dark black chloride Silver and copper sulfide, this chemical salt sometimes falls from gold jewelry, and will also pollute the skin of the wearer, leaving very obvious black stains.
The gold in the gold jewelry will be wearing less and less gold in gold jewelry, but the consumption of this quality cannot be seen. At present, cosmetics have become one of the "characters" for people's lives. If it is applied to the skin of the gold jewelry, it will undoubtedly provide opportunities for cosmetics containing chemicals and the golden jewelry that is most afraid of chemical erosion. The results can be imagined. Some cosmetics also contain some fine hard particles, which can form another type of dirt, thereby wear gold jewelry.
The expansion information:
gold jewelry refers to jewelry made of gold as the main raw material. The chemical symbol of gold is AU, with a gravity of 17.4 and Mo's hardness is 2.5. Gold jewelry can be divided into two categories: pure gold and K gold in terms of gold content.
The gold jewelry has a gold content of more than 99%, up to 99.99%, so it is also known as "nine nine gold", "full gold", and "red gold". In order to overcome the shortcomings of high gold price, low hardness, single color, easy wear, and unspoken pattern, some other metal elements are usually added to pure gold to increase the hardness of jewelry gold and change its tone and reduce its melting point. The gold -alloy jewelry with different color heights and obviously different gold content, the term "karat" is crowned. The K gold system is the international popular gold metering standard. The complete statement of K gold is "Krat Gold" and gives K gold with accurate gold content standards, thus forming a series of K gold jewelry.
Reference materials: Baidu Encyclopedia Gold
Pay content for time limit to check for freenAnswer the environment of wearing will also affect. If the environment is too dry, there are many slender dust in the air. When it is contaminated by the human body, it will constitute a "human sandpaper", which will erode gold into extremely slender debris and turn black. Honey
Why do some people wear gold jewelry? Xiaohan tells you the answer. If the gold jewelry is dirty, how can you maintain it to ensure the light? Xiaohan tells you gold jewelry gold cleaning authentic gold precious metal gold jewelry maintenance
n00:00 / 04: 2570% shortcut keys to describe space: Play / suspend ESC: exit full screen ↑: increase volume 10% ↓: reduced volume decrease by 10% →: single fast forward 5 seconds ←: single fast retreat 5 seconds Press hold down and hold it down. Here you can drag no longer appear in the player settings to reopen the small window shortcut key description
1. Over time, gold jewelry has no shiny daily wear or environmental factors that can make gold jewelry lose its bright color.
. For example, the dry area contains more minimum dust in the air. After the human body is contaminated, it will form a "human sandpaper". Essence
2, the reasons for the black jewelry of the gold jewelry, the waste and harmful substances in the human body, chlorine substitutes, lactic acid, urea ammonia, etc., will cause chemical reactions with silver and copper in gold jewelry, producing dark black silver chloride. With copper sulfide, this chemical salt sometimes falls from gold jewelry, and it will also pollute the skin of the wearer, leaving very obvious black stains.
3, the less gold in the gold jewelry will be wearing less and less gold in gold jewelry, but the consumption of this quality cannot be seen by human eyes.
This expansion information:
This tips to prevent gold jewelry from hacking:
1. The chemicals of cleaning essence will change the color of the gold, so you should take off the gold jewelry before doing cleaning.
2. Avoid contact with high volatile substances such as perfume and glue directly, 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, use a velvet cloth to wrap it in the jewelry box during storage to avoid rubbing and damage to each other.
5, gold is soft and easy to deform, so do not pull the necklace and other accessories to avoid deformation.
6. Pure gold jewelry will have a chemical reaction when it encounters water and silver, and white spots appear. When cleaning, you can restore the original color as long as you grill under the alcohol lamp for a while.