
He was cooking
and selling CRYSTAL meth, Susan.
The Big Bang Theory Season 10, Episode 1

Just bumping uglies
and smoking that CRYSTAL
you got from your pal, Tuco?
Breaking Bad Season 2, Episode 3

And this is a high-pulse laser
with a BBO CRYSTAL.
The Big Bang Theory Season 12, Episode 22

It's a silicon dioxide CRYSTAL,
otherwise known as quartz.
The Big Bang Theory Season 12, Episode 2

Oh, i-it's just this
dumb CRYSTAL wand
The Big Bang Theory Season 12, Episode 2