looking at the pictures here (now my screen has been repaired) the pictures on this site of bona fide Gallstones look different from the pictures of the products of the Liver Flush (as would be expected). the pictures from the Swiss surgical team show some Gallstones that look green due to bile on the surface - if washed off the stone would look like every other gallstone - yellow-white, black or brown. the "blue" gallstone is just showing refraction - the same principle on which some moles look blue (although melanin is definetely NOT blue) and veins look blue (just as venous blood is NOT blue).