We've seen some freakishly fabulous things in our time, and this Ayaka_Nishi Spine Necklace ($2,195) is another one of them. The craziest bit is that it's made of animal bones. Bone jewelry is nothing new — remember the Delfina Delettrez skeleton hand? — but this spine necklace is pretty bold, as it would be front-and-center on your decolletage. Are you ready to show the world your spine?