1. The most direct way is to send the gold ring to a professional jewelry store for maintenance, so that the ring will last forever and shine like new.

If you don't want to go to the jewelry store to clean it, you can also clean it yourself. 2 grams of salt, 7 grams of baking soda, 8 grams of bleaching powder and 60 ml of clear water can be used to prepare gold cleaner. Put the gold jewelry in a bowl, pour the detergent, take it out after 2 hours, rinse it with clear water (preferably not hard water), bury it in sawdust to dry, and then wipe it with a soft cloth.

Don't wear the gold ring you just bought. You can apply a thin layer of nail polish to the ring. Protect the luster of the gold ring.

4. Mix salt and vinegar into a cleaner, and use it to wipe pure gold jewelry, which can make it last forever.