Question 1: What about the discoloration of gold? China people think that yellow represents nobility, and the charm of gold lies in its brilliant golden color and value preservation. Real gold will not change color, but it does not rule out improper maintenance. Like gold bars, rust spots appear, and the common discoloration is white and black. Therefore, in this case, there is no need to worry about whether gold is fake. What about the discoloration of gold? Two tricks to help you solve it! When gold in gold jewelry meets mercury, it will react with each other to form "Jinshui Silver Agent", that is, "Jinshui Silver contains gold", and its color is white. Some cosmetics contain trace amounts of mercury, as do some hair dyes and talcum powder. Blackening is due to the chemical reaction between copper and silver contained in gold bars, resulting in copper sulfide and silver chloride. 99% of human sweat is water, and about 1% is wastes and harmful substances in human body, such as chlorinated substances, lactic acid, urea ammonia, etc. When these substances come into contact with silver and copper in gold jewelry, they will react chemically to produce silver chloride and copper sulfide, which are dark black chemical salts. . First; After wearing, gold jewelry often loses its luster due to stains and dust pollution. At this time, just put the gold ornaments in neutral detergent, soak them in warm water, and then take them out and dry them. Second, the discolored gold can be heated by the gasoline spray wheel used for jewelry processing, because the melting point of mercury and lead is very low, and it will volatilize during the heating treatment of the spray wheel, so that the gold jewelry can recover its original color.

Question 2: What should I do if the gold jewelry changes color or fades? The discoloration or fading of gold jewelry does not mean that the color of gold jewelry is insufficient, but it is closely related to human sweat. As we all know, part of sweat is waste and harmful substances in human body. When these substances come into contact with silver and copper in gold jewelry, they will react chemically to produce silver chloride and copper sulfide, which will lead to discoloration or fading of jewelry. When silver and copper in gold jewelry come into contact, a chemical reaction will occur, resulting in silver chloride and copper sulfide, as well as a dark black chemical salt. This chemical salt often falls from gold jewelry, polluting the wearer's skin and leaving very obvious black spots on the skin. At present, cosmetics have also become one of the indispensable "roles" in people's lives. If it is applied to the skin of the wearing part of gold jewelry, it will undoubtedly provide an opportunity for cosmetics containing chemical substances and gold jewelry that is most afraid of chemical erosion, and the result can be imagined. Some cosmetics also contain some fine hard particles, which can constitute another kind of dirt, thus wearing away gold jewelry. Regional environmental factors may also make gold jewelry lose its bright color. For example, in dry areas, the air contains a lot of primary fine dust, which will form a kind of "human sandpaper" after being polluted by human body, which can grind gold jewelry into extremely fine debris and appear local black stains. It is worth mentioning that talcum powder or moisturizer also contains similar particles, which will also overshadow the above-mentioned gold jewelry. How to deal with the slight fading and blackening of gold jewelry? When the gold jewelry fades and the color is slightly darker, you can apply some toothpaste, wipe it repeatedly with a soft cloth, and then wash it with water to restore the color. In severe cases, you should go to a professional cleaning place and clean it with an ultrasonic cleaner or liquid medicine. Maintenance of gold jewelry 1, cleaning chemicals will change the color of gold, so take off the jewelry before cleaning. 2. Avoid direct contact with volatile substances such as perfume and hair gel, or the gold ornaments will fade. 3. Take off the gold ornaments when swimming to avoid chemical changes on the surface after contact with seawater or pool water. Wrap it in flannel and put it in a jewelry box when you keep it. Can gold and platinum be stored together? Platinum is a kind of natural pure white precious metal, which has high stability and never fades, and will not turn yellow or fade even after a long time. But avoid wearing or storing it with gold. Because gold is soft and rubs against each other, it will not only damage gold, but also make gold yellow on platinum, which is difficult to remove.

Question 3: Why do gold ornaments change color when worn for a long time? The discoloration or fading of gold ornaments is closely related to human sweating. 99% of human sweat is water, and about 1% is waste and harmful substances in human body, such as chloride, lactic acid, urea, urea ammonia and so on. When these substances come into contact with silver and copper in gold jewelry, they will react chemically to produce silver chloride and copper sulfide, and present dark black chemical salts. This chemical salt often falls from gold jewelry, polluting the wearer's skin and leaving very obvious black spots on the skin. At present, cosmetics have become one of the indispensable roles in people's lives. If it is applied to the skin wearing gold jewelry, it will undoubtedly provide cosmetics containing chemical substances with opportunities to meet the enemies of gold jewelry who are most afraid of chemical erosion, and the result can be imagined. Some cosmetics also contain some fine hard particles, which can constitute another kind of dirt, thus wearing away gold jewelry. Regional environmental factors may also make gold jewelry lose its bright color. For example, in dry areas, there are a lot of fine dust in the air, which will form a kind of human sandpaper after being contaminated with human body, which can abrade gold jewelry into tiny pieces and appear local black stains. It is worth mentioning that talcum powder or moisturizer also contains similar particles, which will also overshadow the above-mentioned gold jewelry. Gold jewelry is not very delicate, but it will lose its original luster and charm if it is not carefully maintained. Generally speaking, we should take care of the following points: 1. Cleaning chemicals will change the color of gold, so take off the gold ornaments before cleaning. 2. Avoid direct contact with volatile substances such as perfume and hair gel, otherwise it will easily lead to the fading of gold ornaments. 3. Take off the gold ornaments when swimming to avoid chemical changes on the surface after contact with seawater or pool water. 4. Wrap it in flannel and put it in a jewelry box when keeping it to avoid mutual friction and damage. 5. Gold is soft and easy to deform. Do not pull necklaces and other accessories to avoid deformation. 6. Pure gold jewelry will react chemically when it encounters mercury, and white spots will appear. When cleaning, as long as you barbecue under the alcohol lamp for a while, it will return to its original color. 7. After wearing, gold ornaments often lose their luster due to stains and dust. At this time, just put the gold ornaments in a neutral detergent, soak them in warm water, and then take them out and dry them.

Question 4: Who knows what to do if the gold ornaments change color or fade? What caused it? The discoloration or fading of gold jewelry does not mean that the color of gold jewelry is insufficient, but it is closely related to human sweat. As we all know, part of sweat is waste and harmful substances in human body. When these substances come into contact with silver and copper in gold jewelry, they will react chemically to produce silver chloride and copper sulfide, which will lead to discoloration or fading of jewelry. When silver and copper in gold jewelry come into contact, a chemical reaction will occur, resulting in silver chloride and copper sulfide, as well as a dark black chemical salt. This chemical salt often falls from gold jewelry, polluting the wearer's skin and leaving very obvious black spots on the skin. At present, cosmetics have also become one of the indispensable "roles" in people's lives. If it is applied to the skin of the wearing part of gold jewelry, it will undoubtedly provide an opportunity for cosmetics containing chemical substances and gold jewelry that is most afraid of chemical erosion, and the result can be imagined. Some cosmetics also contain some fine hard particles, which can constitute another kind of dirt, thus wearing away gold jewelry. Regional environmental factors may also make gold jewelry lose its bright color. For example, in dry areas, the air contains a lot of primary fine dust, which will form a kind of "human sandpaper" after being polluted by human body, which can grind gold jewelry into extremely fine debris and appear local black stains. It is worth mentioning that talcum powder or moisturizer also contains similar particles, which will also overshadow the above-mentioned gold jewelry. How to deal with the slight fading and blackening of gold jewelry? When the gold jewelry fades and the color is slightly darker, you can apply some toothpaste, wipe it repeatedly with a soft cloth, and then wash it with water to restore the color. In severe cases, you should go to a professional cleaning place and clean it with an ultrasonic cleaner or liquid medicine. Maintenance of gold jewelry 1, cleaning chemicals will change the color of gold, so take off the jewelry before cleaning. 2. Avoid direct contact with volatile substances such as perfume and hair gel, or the gold ornaments will fade. 3. Take off the gold ornaments when swimming to avoid chemical changes on the surface after contact with seawater or pool water. Wrap it in flannel and put it in a jewelry box when you keep it. Can gold and platinum be stored together? Platinum is a kind of natural pure white precious metal, which has high stability and never fades, and will not turn yellow or fade even after a long time. But avoid wearing or storing it with gold. Because gold is soft and rubs against each other, it will not only damage gold, but also make gold yellow on platinum, which is difficult to remove.

Question 5: What should I do if the gold ring changes color? Find a jewelry processing shop. They all have professional high-temperature muskets. Just bake it. After wearing gold jewelry for a period of time, people find that it will change color or fade. Many people think that the color of gold jewelry is not enough, so they negotiate with the store or complain to the Consumers Association. However, they were told that the discoloration of gold jewelry was not caused by the discoloration of gold jewelry, but by other reasons. So, what is the reason? The discoloration or fading of gold jewelry is closely related to human sweating. 99% of human sweat is water, and about 1% is waste and harmful substances in human body, such as chlorinated substances, lactic acid, urea ammonia and so on. When these substances come into contact with silver and copper in gold jewelry, they will react chemically to produce silver chloride and copper sulfide, and present dark black chemical salts. This chemical salt often falls from gold jewelry, polluting the wearer's skin and leaving very obvious black spots on the skin. At present, cosmetics have also become one of the indispensable "roles" in people's lives. If it is applied to the skin of the wearing part of gold jewelry, it will undoubtedly provide an opportunity for cosmetics containing chemical substances and gold jewelry that is most afraid of chemical erosion, and the result can be imagined. Some cosmetics also contain some fine hard particles, which can constitute another kind of dirt, thus wearing away gold jewelry. Regional environmental factors may also make gold jewelry lose its bright color. For example, in dry areas, the air contains a lot of primary fine dust, which will form a kind of "human sandpaper" after being polluted by human body, which can abrade gold jewelry into tiny debris and appear local black stains. It is worth mentioning that talcum powder or moisturizer also contains similar particles, which will also overshadow the above-mentioned gold jewelry. Welcome to the Blue Danube Diamond Network. This article comes from: (zb 166/) Reprinted source reference: zb166/showarticle-13532.

Question 6: Why do gold ornaments change color? The following is the related information provided by OL Jewelry Network for your reference, hoping to solve the related problems for you. OL Jewelry Network is the first company in China to focus on office women's jewelry, diamonds, diamond rings, wedding rings and diamond rings. Half cheaper than traditional jewelry stores, Italian designers customize personalized jewelry for you, which is worth the money and luxury is no longer expensive. Many people find gold jewelry discolored or faded after wearing it for a period of time. What is the reason? The discoloration or fading of gold jewelry is closely related to human sweating. 99% of human sweat is water, and 1% is wastes and harmful substances in human body, such as chlorinated substances, lactic acid, urea ammonia, etc. When these substances come into contact with silver and copper in gold jewelry, chemical reactions will occur, such as silver chloride and copper sulfide, and dark black chemical salts will appear. This chemical salt often falls from gold jewelry, polluting the wearer's skin and leaving very clear black spots on the skin. If cosmetics are smeared on the skin wearing gold jewelry, it will undoubtedly provide an opportunity for cosmetics containing chemical substances and gold jewelry that is most afraid of chemical corrosion, and the consequences can be imagined. Some cosmetics also contain some fine hard particles, which can form another kind of dirt and then wear gold jewelry. Regional factors will also make gold jewelry lose its bright luster. For example, in dry areas, the air contains a lot of primary fine dust, which will form a kind of "body sandpaper" after being polluted by human body, which can grind gold jewelry into extremely fine debris and present some black stains. It is worth mentioning that talcum powder or moisturizer also contains similar particles, which will dwarf the gold jewelry mentioned above.

Question 7: Why do gold ornaments change color? If cosmetics are applied to the skin wearing gold jewelry, it will undoubtedly provide an opportunity for cosmetics containing chemical substances and gold jewelry that is most afraid of chemical erosion, and the result can be imagined. Some cosmetics also contain some fine hard particles, which can constitute another kind of dirt, thus wearing away gold jewelry. Regional environmental factors may also make gold jewelry lose its bright color. For example, in dry areas, the air contains a lot of primary fine dust, which will form a kind of "human sandpaper" after being polluted by human body, which can abrade gold jewelry into tiny debris and appear local black stains. It is worth mentioning that talcum powder or moisturizer also contains similar particles, which will also overshadow the above-mentioned gold jewelry. The discoloration or fading of gold jewelry is closely related to human sweating. 99% of human sweat is water, and about 1% is wastes and harmful substances in human body, such as chlorinated substances, lactic acid, urea ammonia, etc. When these substances come into contact with silver and copper in gold jewelry, they will react chemically to produce silver chloride and copper sulfide, and present dark black chemical salts. This chemical salt often falls from gold jewelry, polluting the wearer's skin and leaving very obvious black spots on the skin.

Question 8: What about the discoloration of gold and silver jewelry? 1. Cleaning and maintenance of gold jewelry: cleaning in Huang Fang jewelry store, and ultrasonic cleaning. The standard formula for cleaning is: 40C warm water 1000ml, anhydrous chromic anhydride 100g, and 30ml sulfuric acid. The method is: hang the plastic piece number on the jewelry, then thread it with copper wire, hang it on the stainless steel bar and hang it in the washing tank for 80- 120 seconds. The method of manual cleaning is to soak jewelry in 30% sulfuric acid cleaning solution for 5 minutes, then rinse it with a brush, then rinse it under tap water for 5 minutes, and finally soak it in 20% shampoo or detergent for 10 minute, rinse it off, rinse it with clear water for 20 minutes, and dry it with silk.

2. Cleaning and maintenance of silver jewelry: use 50C warm water 1000 ml, 200 ml phosphoric acid and 30g concentrated washing powder, pour the mixed solution into the ultrasonic cleaning tank for cleaning 100 second, and then rinse it with clear water.

Household cleaning: pour the cleaning liquid into the container, soak the silver jewelry for 10 minute, then rinse with toothbrush, and then rinse with clean water for 10 minute.

(2) Cleaning and maintenance of jewelry and jade articles

Wash with 20% neutral detergent or shampoo, and knock at the liquid temperature of 25. Soak for 10 minute, then brush slowly with a toothbrush, remove sweat and dirt and soak in tap water for 20 minutes.

(3) Maintenance of jewelry and jade articles

Gold and silver jewelry and jade articles should be dried with silk after being rinsed with clear water. If there are scratches and scratches on the gold products, you can apply a layer of white jade toothpaste, wipe it with silk cloth, polish it with cloth grinding wheel or polish it with green oil. Chains and gold earrings can be coated with watch oil or protective film on hooks and screws.

Paraffin wax is the common protective film for glazing. Pink nail polish is a common protective film for gemstones. Nail polish is widely used, such as brooches, rings, earrings, brooches, cufflinks and so on. At present, the more popular protective agents are transparent electrophoretic paint and B0l propylene varnish; SOZ polyurethane varnish. More suitable for high-grade gems, such as jade, ruby, sapphire, aquamarine, emerald and so on.

(4) Cleaning and maintenance of pearls

Pearls should be wiped with soft paper or cloth containing silicone oil. For pearls with serious blackening and tarnishing, they should be soaked in 20% salt water for one hour, then rinsed with 3% hydrochloric acid solution, and then rinsed with clean water 10 minute. Pearls should not be exposed to the sun, so as to avoid hygienic storage of water and camphor.

Question 9: What should I do if the K-gold necklace changes color? K gold may be oxidized and discolored when worn for a long time in contact with air. Just go back to the factory and re-polish and clean. I hope I can help you and adopt it. Thank you!

Question 10: Why does the gold on jadeite change color? Either alloy, impure, or oxidation!