The substance burns so hot,
it melts wood, stone, even STEEL,
Game of Thrones Season 2, Episode 5
Heavy black STEEL, double-sided.
Game of Thrones Season 1, Episode 9
The original weapon was absurdly large.
Plenty of STEEL for two swords.
Game of Thrones Season 4, Episode 1
Cold-rolled STEEL.
Game of Thrones Season 4, Episode 7
Valyrian STEEL.
Game of Thrones Season 1, Episode 3