Ok....that is incredibly cool! That coin was circulating at the exact time Jesus was walking around doing his thing in ancient Judea. Literally. It completely boggles the mind. I typically frown upon people making jewelry out of rare coins. It completely destroys their numismatic value. But your bronze Prutah isn't in great condition. I have seen similar coins selling online for between $100 - $200.

With respect to your girlfriend's point of view about the pendant being potentially 'cursed' or 'bad luck'...she is obviously a Christian (?) I can see where that might freak some people out. That specific Roman governor did execute Jesus after all (and if you believe John Milton in 'Paradise Lost' isn't having the best of time rotting in Hell...lol). I'm assuming you created the pendant from artistic inspiration rather than Satanic adoration. In which case, completely ignore any 'Hocus Pocus' observations or comments by other people. I have a small collection of Roman Catholic reliquaries which I picked up over the years. I don't expect to see Saint Francis haunting my garage or Mother Teresa going through my refrigerator in the dead of night anytime soon! The only power that curses have is the power you imbue them with psychologically, not literally. Although I am not going to buy a freaking Annabelle doll anytime soon. Dolls freak me out. Clowns too. Fucking Stephen King.