Tamora Pierce

Briar Moss been training four years as a plant mage, but he hasn't put his past behind him. He meets a street girl, Evvy, using powerful magic to polish stones for a merchant, and resolves to find her a teacher. But Briar understands the city's gangs as well as he understands Evvy. When gang warfare breaks out, he discovers that the fiercest gang is seeking a stone mage to lead them to hidden gems. Only Briar and his magic can offer Evvy protection. Swept up in a bloody conflict, Briar must decide if he's ready to make the final step away from his former life as a "street rat".

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