If it is a 925 sterling silver ring, you can wipe the surface of the ring with a silver cloth. If you encounter carved or irregular surfaces, you can gently scrub them with a soft brush with a little toothpaste.

After brushing, let the foam adhere to my sister hi for about 1 minute, then rinse it with clear water and dry it with a soft cloth. The ring should light up again.

Be careful not to use silver washing water for cleaning.