Hi Sharancs....well those may be intraheptic liver stones
or they may come from inside your gallbladder. We're not sure. The blocking cholesterol/bile 'stones' seem to range from soft soft (more recently formed?) to hard as rock - the calcified ones that turn up on ultrasounds. Mind have been inbetween...with hard crusty outer crusts and emeral green gel on the inside.
Fascinating...glad you got some out!