Hi Robert, congratulations on your second flush! Actually mine were all the size of peas, and pearls a few marble size ones too. I dont believe it is the olive oil. I believe they are pre-calcified stones. If others reading this agree/disagree let me know. I have not had any hard stones at all. They mush and feel like wax. They are very green. I hope to God that it isnt the olive oil and that it is indeed stones coming out, even though I never had symptoms of stones, I did the flush to clean out my liver/gallbladder. Anyway, when are you doing your third flush? I will do my third after thanksgiving. Good luck Barbi