In the land of Yurdeh, gemstones mean life.

Starr Wandermer has spent her life gem hunting with her mother, Diamond. Yurdeh is a land on the brink of total destruction. Years ago, a meteor destroyed the land and covered the sky in dust, but it also brought the ability to charge gemstones. Each type of gemstone has a unique power, and Starr and her mother are searching for a gem that can clear Yurdeh's skies.

When Starr's mother is kidnapped from their new mining claim, Starr escapes capture with a single uncharged gemstone in her pocket. Starr knows she must transport the unidentified gem to the magical crater across the country. When Starr is followed onto the train, she discovers that the young heirs of BGMC—a corrupt corporation that would kill Starr to claim the gem—are on her tail. Starr evades BGMC with the help of Hinton, a dashing young member of a secret society. Together, Starr and Hinton race across the land in order to charge the gem, discover its power, and save Diamond before time runs out.

By Sapphire Light is the first book in The Gemology Saga, a new series by the author of the Black Depths series. This young adult steampunk fantasy novel will have you on the edge of your seat and is a great new addition to the steampunk genre.