clear as crystal

I’m certain she thought this explanation was clear as crystal, but I couldn’t fathom one word of it.

“It’s all there, black and white, clear as crystal! You stole fizzy-lifting drinks, so you get NOTHING! You lose! Good day, sir!”

‘I really did dream about those children, Mary. It was clear as crystal.’

And that was clear as crystal.

It’s clear as crystal: These Spurs aren’t those Spurs.