The stone was so big, Shatner said, “you’d want to wear it on your finger.”
“If you subjected it to extreme heat, it might turn out to be a diamond,” he added.
Note to Shatner: A kidney stone is made up of calcium. You cannot create a diamond from calcium. Didn’t you see the Superman movie? He used coal. Now, unless you’ve got coal running through your body, your metaphor doesn’t work.