1, in order to protect the luster of gold jewelry, you can coat it with a thin layer of nail polish.

2. If there is a black silver film on the surface, 2 grams of salt, 7 grams of baking soda, 8 grams of bleaching powder and 60 ml of water can be used to prepare a "gold cleaner". Put the gold jewelry in a bowl, pour the detergent, take it out after 2 hours, rinse it with clear water (preferably not hard water), bury it in sawdust to dry, and then wipe it with a soft cloth.

3. Ring with gemstones Roll a piece of cotton with popsicles or matchsticks, soak it in the mixed solution of toilet water and glycerin, scrub the border of the gem, and then polish the ring with flannel. Never scratch with sharp objects such as blades.

4, salt and vinegar mixed into a cleaning agent, use it to wipe pure gold jewelry, can make it durable.

5. Toothpaste wiping or scrubbing with hot rice soup can also restore luster.

6, 70% nitric acid and 98% sulfuric acid can be used in a ratio of one to three, but this is a chemical reaction to clean, which has a certain loss to gold.

Extended data:

Although gold itself has not been corroded, it has a strong chemical affinity with sulfide, and it is easy to adsorb hydrogen sulfide acid gas in the air, and its surface may be dark, such as orange and brownish red. The production of gold products needs to go through many complicated processes.

Take gold bars and coins for example. They all go through the processes of smelting, tabletting, blank cutting, blank pressing, quenching, acid frying, polishing, pressing and edge pressing. The working environment cannot be a vacuum environment. Every link may encounter dust and impurities in the air attached to the blank of the product. These impurities may become erythema after being stored for a period of time without quenching and pickling.

Don't touch gold products directly with your hands during daily appreciation. Once erythema appears, you can ask professionals to burn gold products on the fire, which can solve the problem and basically do not affect the quality of gold products.

In addition to red spots and black spots, gold products sometimes have white spots, especially gold jewelry.

This is mainly because consumers often put gold jewelry in drawers at will. When it comes to mercury, it will immediately form a large area of white spots, especially when women use cosmetics containing mercury. Long-term contact will also produce white gold products. If you wear platinum and silver jewelry at the same time, after long-term friction, the surface will also produce white spots.

Baidu encyclopedia-gold jewelry

Baidu encyclopedia-gold