I'm not typically into jewelry, but when I saw Surly-Ramics, I knew I needed one. Surly Amy (who's also a Skepchick) is a wonderful artist who produces awesome skeptical, atheist, and science themed jewelry (amongst other things). I had been lurking on Etsy, waiting for the perfect color, but I finally found exactly what I was looking for:Yep, that's Darwin's sketch of the tree of life. As a female evolutionary biologist, I'm pretty much required to get this due to overwhelming awesomeness (plus, I loved the color). I'll definitely be wearing this to my evolution class and lab!