Yes, I have done it all, at least that is what it feels like, twice the gold coin, 6 months chanca piedra, phosfood, tablets like gold coin (forgot the name), peppermint oil actually I am still doing that and a bunch of other stuff, too many to remember. Every year the stone is the same size, when they are really hard and calcified it is not easy, my main thing is that it does not get bigger because 1" in a small gallbladder is pretty big. I keep myself clean with maintenance flushes so the bile will keep flowing.
May be some day it will just disappear, wishful thinking, at least I feel fine.