Authors:

On his first hand he wore rings of stone, Iron, Amber, Wood and Bone. There were rings unseen on his second hand, One was blood in a flowing band, One was air all whisper thin, And the ring of ice had a flaw within. Full faintly shone the ring of flame, And the final ring was without name.

"The Wise Man's Fear". Book by Patrick Rothfuss, 2011.
On his first hand he wore rings of stone, Iron, Amber, Wood and Bone. There were rings unseen on his second hand, One was blood in a flowing band, One was air all whisper thin, And the ring of ice had a flaw within.