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Copper wrapped 18K gold is not allergic  
Color retention time is not easy to fade  

All the gold plated ornaments with a long time will be oxidized and discoloration, because this is a natural oxidation phenomenon, only gold will never fade, have common sense all know.  
This kind of gold coated product has a good color retention effect. The length of color retention time is related to personal wearing habits and constitution.  
Try not to contact sweat, perfume, cosmetics and other chemicals corrosion electroplating.