I am sure that my golden item practice is soft, and I am not sure, and I burn some places to change color with a lighter. I want to ask how to change color? Is it valuable about about forty centimeters? I don't want anymore
5 thoughts on “How can there be black spots in the gold necklace”
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Don't you want it anymore? give it to me. Essence
The metal fire will change color. Essence Wash it with alkaline washing solution to restore the original color.
Metals will change color when they encounter chemicals,
Pay content for time limit to check for freenThere are three cases of answering the golden necklace turning black: 1. Some cosmetics contain trace mercury, contain trace lead in using cosmetics or hair dyes, and gold when gold encounters lead. The gasoline spray gun used for jewelry processing can be removed. Because the melting point of mercury and lead is very low, it will volatilize during the heating of the spray gun, so that the gold jewelry will restore the original face. Of course, it is best to wear gold jewelry when using cosmetics or hair dyeing to avoid posterior trouble. 2. Gold necklace turning black is mainly located at the connection of the ring and the ring. Because the ring -to -ring connection of the necklace needs to be welded, welding medicines need to be welded during welding. The welded drugs used by various manufacturers are not necessarily the same. , Black phenomenon. 3. Gold necklace. 24K is a thousand -footed gold. But in fact its content is only 99.99%. It will not be 100%. Because it is less than 100%pure gold. At most, the content of 99.99%. The remaining 0.001 is other metals. For example, silver, oxidation in the air will turn black.
Go directly to the Golden Store, you have a special repair window. You go to let him check it. If it is right, you can change it directly in the gold shop. The same number of grams only requires the handling fee!
Moldy!