Why do earth science professors always talk about ammonia? Because it’s basic material.
What do you call an Irish gem that’s a fake?
A sham rock.
Why can’t minerals ever lie? They’re always in their pure form.
Where do rocks like to sleep?
In bedrocks!
Why was the sedimentary rock so cheap? It was always on shale.
What do you call a rock that never goes to school?
A skipping stone!
Why did the toddler chew on pebbles? He wanted to eat rock candy.
Did you hear about the metamorphosis professor who just gave up on life? He really needed a change.