"Sixteen-year-old Gwyneth discovers that she, rather than her well-prepared cousin, carries a time-travel gene, and soon she is journeying with Gideon, who shares the gift, through historical London trying to discover whom they can trust."-- Provided by publisher
Jewels Series
This series pulls readers into a world brimming with mystery, magic, and unexpected twists. Young protagonists find themselves entangled in ancient secrets and dangerous schemes that threaten their reality. It's a captivating adventure that masterfully blends fantastical elements with a thrilling plot, leaving a lasting impression.





Recommended Reading Order
- 1
- 2Gwen'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. Sapphire Blue is the second book in the Ruby Red Trilogy from Kerstin Gier. 
- 3Gwen has a destiny to fulfill, but no one will tell her what it is. She's only recently learned that she is the Ruby, the final member of the time-traveling Circle of Twelve, and since then nothing has been going right. She suspects the founder of the Circle, Count Saint-German, is up to something nefarious, but nobody will believe her. And she's just learned that her charming time-traveling partner, Gideon, has probably been using her all along. Emerald Green is the stunning conclusion to Kerstin Gier's Ruby Red Trilogy, picking up where Sapphire Blue left off, reaching new heights of intrigue and romance as Gwen finally uncovers the secrets of the time-traveling society and learns her fate. 
- Trilogie Drahokamy- 3 volumes
- 1104 pages
- 39 hours of reading
 - Trilogie Drahokamy od Kerstin Gier se skládá ze tří částí, které sledují příběh mladé dívky Gwendolyn Shepherd, jež se ocitá v neobvyklé situaci, když zjistí, že má schopnost cestovat časem. Tento dar je v její rodině vzácný a Gwendolyn se brzy zaplétá do složitého světa tajemství, intrik a historických událostí. V průběhu příběhu se setkává s charismatickým Gideonem de Villiers, který ji provází jejími cestami do minulosti. Hlavními tématy knihy jsou láska, přátelství a odhalování rodinných tajemství, stejně jako zkoumání morálních dilemat spojených s časovými paradoxy. Gwendolyn se musí vyrovnat nejen s nově nabytými schopnostmi, ale také s tlakem očekávání, které na ni kladou její blízcí a tajné společnosti, které usilují o moc nad časem. Kromě Gwendolyn a Gideona se v příběhu objevují i další důležité postavy, jako jsou Gwendolynina nejlepší kamarádka Lesley a její rodina, které hrají klíčovou roli v jejím vývoji a rozhodnutích. Trilogie kombinuje prvky fantasy, romantiky a napětí, čímž vytváří komplexní a poutavý příběh o dospívání a objevování vlastního místa ve světě. 
- Discovering that she carries a time-traveling gene, Gwen learns that she is a part of a society called "The Circle of Twelve," causing her to jump around historical London in order to uncover other time travelers and their secrets.