How to clean the gold-plated necklace when it turns black-What should I do when the gold-plated necklace of jewelry turns black? Jewelry makes a coup for you. When jewelry turns black, you can use toothpaste to clean it, or send it to an electroplating factory for cleaning. 1. Toothpaste is a good helper in removing black. The blackening of gold-plated necklaces is due to oxidation. Toothpaste can remove oxides on the surface of gold-plated necklaces. You can scrub with toothpaste and then rinse with water. Toothpaste is rich in fine calcium carbonate particles. The friction of these particles can wipe off the oxides on the surface. Find a toothbrush, dip a little toothpaste and rub it patiently for a while, then wash it off with water. It should be noted that after scrubbing with toothpaste, be sure to wash with clean water, it is best to wash with pure water, not with the kind of chlorine disinfected tap water. 2. Send it to the electroplating factory for cleaning. If you really can’t clean it up, you can also send it to the electroplating factory for cleaning. The electroplating factory polishes the surface of the product with a water wave polisher to remove the oxidation product, and then undergoes pickling treatment, so that the processed product can be placed in the electroplating tank After electroplating, the electroplated product is as shiny as the original. Wiping the gold-plated surface with other wiping cloths will erase the electroplated layer. In addition to black, it will also remove the gold on the surface, and it will not restore the gold on the surface. Gold-plated necklaces turn black because the gold-plated has been oxidized. There are two types of gold-plated, one is gold-plated with homogeneous materials, and the other is gold-plated with heterogeneous materials. The above are the two ways to clean gold-plated necklaces and turn black that jewelry has shared for everyone. I hope it will be helpful to you. If you have a better way, please contact us: