I don't know either but that is a lovely necklace.
On another note, did you know that Dogeared has a Eat Pray Love inspired line of jewelry? Pretty stuff, but I don't think that necklace is one of their pieces.
It reminds me of Jeanine Payer, though Me & Ro did a lot of jewelry for the movie.
i just checked me & ro's website and there's a link on the front page of jewelry from the movie, eat pray love. this is the only one that may look similar, but i still don't think it's the same one.
http://www.meandrojewelry.com/SearchResult.aspx?CategoryID=49&PID=4&page=4