I literally stumbled across this and had to share. It's a key AND fleur de lis necklace!
It's not quite the fleur-de-key design that was rolled out a few years ago (which I LOVE, by the way) but still very cool.
http://www.ross-simons.com/products/470749.html
On a semi-related note, I just found a diamond fleur de lis pendant (similar to the fleur on this neckalce, but without gaps) at a thrift store for $18... I'm wearing it as we speak