Here There Be Dragonnes(2003)
(A book in the Pigs Don't Fly series)
An omnibus of novels by Mary Brown
Originally published as four separate novels, "The Unlikely Ones", "Pigs Don't Fly", "Masters of Many Treasures", and "Dragonne's Eg", this romantic fantasy concerns three unusal heroines in widely separated times, each wearing a ring made from a unicorn's horn, a ring with unusual powers.
Similar books by other authors
Used availability for Mary Brown's Here There Be Dragonnes
February 2003 : USA Paperback
December 2013 : USA, Canada, UK Kindle edition