That would suggest that most of these 'stones' are of a waxy consistency as opposed to being hard like rock.
I'd like to believe this is the case but am still not entirely convinced that these are stones that were flushed from liver biliary ducts. Some of these lumps appear rather large and I wonder how it could have been 'flushed' out of the biliary ducts which I don't believe is that large an opening for these 'stones' to pass through. But I'm no surgeon so I don't know. I'm speculating.