I ended up making earrings as well. Isn't it amazing how something as simple as scrap paper can become useful and beautiful? I used the front and back covers of a calender (featuring shoes).
Jason is working on a book that will have details on how to make these necklaces as well as other great paper projects. I'll be sure to let you know when it comes out.
Here is a seller on Etsy who makes these necklaces from library cards, History of Art. Brilliant!!