Magic item, arcane or divine ?

[Nightfall]

Nah one would say "Hey that's mine!" the other would say "No! Mine!"

 

[Infiniti2000]

In Magic of Faerûn, with a DC 20 Knowledge[Religion] one can know the patron deity of a divine magic item. I should have given that one before...

Knowing the origin can be very important to some characters who shun arcane / divine magics.

IMHO, Spellcraft maybe the right skill...

Having just looked in my Magic of Faerûn book, I've figured out your error and the answer to your question. The DC 20 Knowledge (religion) check lets one know the patron deity of a religious magic item. Huge difference, and far easier to adjudicate. Ilium's answer was, in fact, correct.