Sea Glass by Maria V. Snyder — book slip

Opal Cowan, a young glass magician-in-training, finds herself caught in a dangerous power struggle in the realms of Sitia and Ixia.

With her newfound ability to steal the power of other magicians, Opal is deemed too dangerous and placed under house arrest by the Council.

Defying their orders, she sets out to find Ulrick, the man she believes she loves, only to discover disturbing rumors about his involvement with blood magic.

As Opal navigates the treacherous lands of the Moon Clan, she must decide whom to trust and how to secure her future, all while others seek to control her powers for their own deadly purposes.

Second in the Glass series by Maria V. Snyder.