Thanks. But what is cold iron, to you? At first, I was thinking it was iron forged and then cast into the snow to crystalize it fast. Then I was thinking something spectacular, like meteor iron or iron formed without heat, using only the skill of burly and very patient dwarves? :\
Or perhaps it's just iron from the Iron Range . . . gets kinda cold up there, I hear.
IMC, there's a metal that's super elvish stuff from ancient times -- sort of an everything alloy, that has all the cool properties rolled into one item. And of course, it glows blue and brightens higher in the presence of orcs and other ancient evils, since I like to steal from Tolkien.