The beauties you can see above are the work of Annie Saunders from Carson City, NV. Both the setting and the chain are made of bronze, and, according to her, the necklaces are great for cosplay. I'd use mine to bring out my inner Elizabeth. Hey Booker, want some money?

Bioshock Infinite Bird/Cage Necklace [Etsy, via mahlibombing@Tumblr]