Available here: http://www.etsy.com/shop/mdavisstudios
A single vertebra bone, 3D printed in stainless steel, hangs from a dark silver colored chain. The specific vertebrae is (human) lumbar vertebrae # 3 - situated in the lower back in real life. Great care was taken to model and create it with anatomical accuracy (although it is just a fraction of real life size!), and to show off all the interesting and unique bony structures on this piece of the spine.
Thanks for looking!