Open Hardware necklace

I saw a few of my friends at the Open Hardware Summit wearing this necklace:
http://blog.makezine.com/archive/2011/09/open-hardware-silver-pendant.html
and wanted to make one for myself. I'm putting it up on my Shapeways shop in sterling silver and hopefully ordering one myself soon!
http://www.shapeways.com/shops/dustynrobots