... Would it, by any chance, be similar to those shards of mirror that were retrieved from the ship? With similar effects?

[And how long have you had this and not told anyone, Winnie?

If that is the case, though, it makes more sense as to why someone would keep it in a vault in a bank. That's clearly more valuable than just a mirror.]

If that is the case, I would say that is why they're targeting you. Unhalad seems quite desperate to get his hands on those mirrors.