If you lose a relic, can you get it again?

I had legendary armor that broke, will i get a quest for it again?

And a second question, is there a mod that removes durability on legendary weapons and armor? I feel like they should be unbreakable

EDIT: So I just got the mission to go get it again. Interesting. I guess I'll get some kind of repair mod and repair it once I had it for a while