Gallstone?

I'm not Liver Flushing right now, but I have been taking the liver gallbladder tincture for a few months now. Tonight I pooped a stone looking thing that I also pooped one other time. They were both a little larger than a chickpea and a little more dense than a corn puff. Also the same yellowish color of a corn puff. Both floated. When i squished them they looked kind of grainy and light yellow all the way through.

Are these gallstones?