Shark Skin ring: size 10 (US) U (UK)

Artifact 10: Ring based on sharks skin as seen through an electron microscope. Shark skin is covered with tiny sharp scales called denticles which protect the shark and reduce drag. They are different to fish scales in that they have a closer structure to teeth and also that they look utterly alien and amazing close up. http://www.sharksinfo.com/skin.html#.VGtXQ8kYu6p