Sapphire Blue
Gwen’s life has been a rollercoaster since she discovered she was the Ruby, the final member of the secret time-traveling Circle of Twelve. In between searching through history for the other time-travelers and asking for a bit of their blood (gross!), she’s been trying to figure out what all the mysteries and prophecies surrounding the Circle really mean.
At least Gwen has plenty of help. Her best friend Lesley follows every lead diligently on the Internet. James the ghost teaches Gwen how to fit in at an eighteenth century party. And Xemerius, the gargoyle demon who has been following Gwen since he caught her kissing Gideon in a church, offers advice on everything. Oh, yes.
And of course there is Gideon, the Diamond. One minute he’s very warm indeed; the next he’s freezing cold. Gwen’s not sure what’s going on there, but she’s pretty much destined to find out.
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Kerstin Gier
In the world of time-traveling teens, hidden diaries, and secret societies, Kerstin Gier has carved out a space that feels both whimsical and wise. Best known for her Ruby Red Trilogy, Gier blends fantasy with romantic tension and just the right dose of humor—making her stories irresistible to young adult readers around the globe. Her gift lies not in epic battles or sprawling world-building, but in creating tightly woven tales where time travel feels like an emotional journey as much as a physical one.
The Ruby Red Trilogy
The Ruby Red Trilogy consists of three books. The current recommended reading order for the series is provided below.
