Are calcified stones hard like rocks?

Hi guys

I have been soaring through this website searching for my question whether I passed calcified stones or not. Some say they are hard like rocks which could scratch your rectum, some say they are not as you can crush them. I am having calcified stones which could be seen through Ultra-sound. I just did my 2nd flush yesterday. Like the first time, I passed out some greenish pea-size grease playdough-like stuff and this time a huge 1 inch ball. I picked it up and examined, it was soft like playdough that I can crumble it. I really want to know if they are stones or just " poop". I really appreciate your help. Thanks a lot, Julia Tweet