Hong Kong Zall Jewelry takes diamond inlaid products as the leading factor, covering jadeite, tourmaline, hibiscus, prehnite, ruby, platinum, gold, pearls and gold and silver ornaments, providing consumers with jewelry products with classic design, rich connotation, excellent quality and moderate price.

Gold itself has not been corroded, but it has a strong chemical affinity with sulfide, and it is easy to adsorb hydrogen sulfide acid gas in the air, or its surface may be dark, such as orange, brown and so on. 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 it with platinum and silver jewelry at the same time, it will also produce white spots after long-term friction.