The Diamond Bearer's Ring (The Unaltered #7)

Book seven of The Unaltered Series. Calli’s impulsive decision to break communications with the Diamond Bearers leaves her stranded when captured by Max and The Bureau. With Chris’s life on the line, she must find a way to protect his heart from the stress of the new diamond, while also convincing the government to join forces in preparing for the impending cosmic blast, to stop the Reapers from attaining world domination.