Many people find gold jewelry discolored or faded after wearing it for a period of time. Many people think that the quality of gold jewelry is insufficient, so they go to the store to negotiate or complain to the Consumers Association. However, they were told that the discoloration or fading of gold jewelry is not due to the lack of color of gold jewelry, but other reasons. So, what other reasons are there?

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 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 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, 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 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.

Gold jewelry is not very delicate, but it will lose its original luster and charm if it is not carefully maintained. Generally speaking, the following points should be careful:

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.