1. If gold fusion welding is used for welding, there are few welding parts, and the purity and grams of gold will not be affected.
2. If ordinary flux is used for welding, there are many welding parts, which may affect the purity and grams of gold, because ordinary flux welding usually needs to add flux, which may introduce impurities and reduce the purity of gold. At the same time, if there are many welding parts, it may also affect the grams of gold.
Therefore, when welding gold, it is recommended to choose a professional jewelry welder to operate, and try to ensure the purity and grams of the necklace.