Can stones actually be formed during the Liver Flush?

I'm on my 5th flush (in progress) and I have passed stones again, dark green and bright gree ones, not that big. But I see a lot of matter type of stones, that are the color of the olive oilish. They are not as solid as the stones, they break if you touch them with pressure, and there are so many of them, from little spots to big stones.

I have not seen this on my first flushes. Can this matter actually form out of the Olive-Oil during the Liver Flush?