Covet - JLO's Cartier Necklace

I was completely awe struck when I saw the Feb 2010 issue of Elle Magazine, featuring Miss JLo wearing a duo of necklaces by Cartier and Jacob & Co. It's not that I am impressed by the big names - I just think it is a gorgeous necklace. I love the mix of thin and chunky chains. I love it's simplicity. I love how it makes a timeless statement. I am deeply tempted to make one similar to it with my vintage wares...