What Is a Kidney Stone Made Of?

What's a kidney stone made of? That's what you're asking. None of us thought to look this up before. It starts out tiny and then collects stuff around it like a pearl. Or a snowball. Like the ball in Katamari, Damasi, the video game. The uteror goes from your kidney to your bladder. Yes. The urethra goes from your bladder to your exit point. Yeah. And that's what I'm googling as I talk slowly so that I can answer you as if I had the answer prepared. Not that we've established that.