The Nefertiti necklace I found looks a lot like it, but it's a piece of crap off eBay. Sorry guys, there was only one and I snatched it up when I saw it. But maybe you will have luck on eBay. I also have a sterling silver collar necklace with 12 emeralds. I
I guess Keira is one of a kind, so is her necklace. If you like her style and ancient Egypt, why not a necklace or ring with Isis or Cleopatra or an ankh or another style with Nefertiti's bust? They would all look amazing and can be found quite easily.