Liver Cleanse Are they Stones? Green inside

I did my first liver cleanse Friday... Went well. I have a question? My BM in the am where tan in color I had a lot of small floating balls and a couple the size of marbles. They where tan on the outside but pea green in the center. They are soft to touch and waxy. What are they??? are they stones?? My friend did the same cleanse (DR Clark) and he had all little green balls. Are they stones. Any idea??? Thanks