If the stone does not bother you, you can live with it.
I have had my stone 2.8cm more than 10 years. It seems to be impossible to break up a calcified stone.I flushed for 4+ years, but it is too big to come out. If I have a slight pain in the gallbladder area I take 1 tbs Epsom Salts in warm water and the pain goes away.