@EasterlyIrk Yeah, I still have it. I've been flying it around for a bit, so it's not in its original state, but it's not broken. It should have ~2/3 of its durability. Or we can trade the first one, that's on 4/5 or so (just the flight down from the ship). But I'm afraid I don't have any need for diamond horse armor, as I don't have nor use any horses.
