The door and the vault
is made of Valyrian STONE.
Game of Thrones Season 2, Episode 5
I don't know. She just said,
"Howard, Mama's a rolling STONE."
The Big Bang Theory Season 2, Episode 21
he hears the Stone Men in their misery.
Game of Thrones Season 5, Episode 3
...and tear down their STONE houses.
Game of Thrones Season 1, Episode 7
Remember when you didn't get picked
to pull the sword out of the STONE...
The Big Bang Theory Season 8, Episode 18