A simple google search will establish, that yes, Gallstones float:
Q4. Why do the stones float?
They float because the major component of most Gallstones is cholesterol, which has a lower specific gravity compared to water. In rare cases, calcified stones which are denser than water will sink.
Second, there have been people who have had their stones sent to labs etc all to prove that yes, they are indeed gallstones.
Third, many people have had the before cleanse and after cleanse ultrasounds to verify the presence, and then the disappearance, of said stones.
Fourth, how can drinking a bunch of olive oil and lemon juice produce such profound health effects? My first flush i was cured of my sinus allergies instantly, overnight. And i entered into it a disbeliever.
Fifth, what about like my last flush, where I actually puked up all the olive oil and lemon juice around 5AM... then proceeded to pass 250 stones the next day, all varying in size, color, etc. Where'd all those stones come from with no olive oil?
Sixth, is it really necessary to treat forum members like they are a bunch of idiots? Your "science" came across pretty arrogant and negative.