
Gaiman, and Diamond.
The Big Bang Theory Season 11, Episode 16

to turn it into
a tiny little DIAMOND
The Big Bang Theory Season 7, Episode 7

There's a Neil Diamond
concert next month!
The Big Bang Theory Season 7, Episode 3

with this punk-ass DIAMOND saw.
The Big Bang Theory Season 12, Episode 14

...that repurposes DIAMOND drill bits.
The Big Bang Theory Season 8, Episode 23