The Lazarus Crystal was used to restore Rasper Hawkborne's life after he was found frozen and partially submerged in an ice glacier 2500 years after setting sail on the Great Inner Expedition of 10027.

The crystal sits at the center of the Xeng Ka rejuvenation ritual, which heals as well as youthens the body by several years. It's because of this that Rasper appears substantially younger throughout his travels in the 125th century, as he is effectively 40 years old again.