I must say i too was sceptical and suspected the stones could be a result of the oil, but a few things have since changed my mind.
1 - mixing olive oil and lemon juice together did not congeal like i thought it would, the juice remained ontop the oil
2 - my 'stones' when cut open were a shade of green, a few days later when i saw a gallblader cut open during an autopsy green liquid similiar in colour to the stones poured out
3 - when i posted pictures of my stones i saw how different they were compared to everyone else, in terms of shape, colour and texture. if the stones were a result of the oil mixture i would expect all stones to be fairly similiar.
Liver Flush is quite an experience and you can certainly feel the larger stones pop out! but calling them stones is misleading as they are not your typical stone. i dont feel any different after my first flush but still plan to do my second, and be objective about it too. from what i have seen so far it seems genuine