Dark Quetzal is a fantasy novel by Katherine Roberts. It is the final book in The Echorium Sequence and is the sequel to Crystal Mask set 11 years in the future. The book was first published in 2003 by The Chicken House.
- 2003, UK, Chicken House Ltd, ISBN 190343467X, Pub date March 1, 2003, Paperback
- 2003, UK, Chicken House Ltd, ISBN 0439456975, Pub date May, 2003, Hardback
- 2004, US, Chicken House Ltd, ISBN 0439523095, Pub date April 1, 2004, Paperback