Generally speaking, it is enough to wash the jade Buddha directly with water, but some jade articles will get oil stains after being stuck on the body for a long time, so wash the oil stains with some soap. Rinse with water when cleaning, and don't leave soap on the jade. You can do the final cleaning with some small brushes.
3. If it still doesn't fall off, then clean it and put it in a high place at home, and don't put it with sundries. Why don't you find a clean little box, put the pendant in it, take good care of it, and don't lose it.
It is best to clean the Buddha pendant with respect and put it in the Buddhist temple. No Buddhist temple can be placed in a high place or a clean place in the study or other places. It is best not to put it in the bedroom and disrespectful and unclean places.
5. All Buddhist supplies are kept in (noble and clean place), and there are no other requirements. There is no amitabha in the south.