Flotsam: Book One of the Peridot Shift, Second Ed. - The Peridot Shift, #1

Captain Talis just wants to keep her airship crew from starving, and maybe scrape up enough cash for some badly needed repairs. When an anonymous client offers a small fortune to root through a pile of atmospheric wreckage, it seems like an easy payday. The job yields an ancient ring, a forbidden secret, and a host of deadly enemies. Now on the run from cultists with powerful allies, Talis needs to unload the ring as quickly as possible.
Her desperate search for a buyer and the fallout from her discovery leads to a planetary battle between a secret society, alien forces, and even the gods themselves. Talis and her crew have just one desperate chance to make things right before their potential big score destroys them all.