There are red dots on the surface of the gold bar. The appraisal certificate indicates that three nine golds. Seeking answers! Thanks !!
3 thoughts on “What is going on with red dots on the gold surface?”
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Hello, the red dot on the gold bar is the chemical reaction caused by the acidity of the gold surface after contacting the air.
Pet gold products After the production is completed, in order to handle the dirty things on the surface, gold products will be cleaned with acid, and then they are cleaned with steam and water. In the process, there is a little sour without washing off. After a period of time, after contact with the air, a small red dot will appear on the surface of the gold product. This is normal and it will not affect the purity of the gold itself. Wait, so don't worry.
Even if your gold content is three nine, but manufacturers will inevitably add some other metals to enter, such as 钯, silver ... Over time, the above problems will occur. Just wash the potion and wash it.^.^
After a long time, it doesn't matter if it doesn't matter