Herrscher Core

Herrscher cores are what allow Herrschers to access Honkai Energy. They are usually formed from a high concentration of Honkai Energy during Eruptions, and therefore take a effort for the Will of the Honkai to form.

Gems
Gems are non-formed Herrscher Cores that were granted to Sirin by the Will of the Honkai during the Second Eruption. They grant weakened powers of their respective cores, but are not equivalent to a core. Once a Herrscher awakens and forms its core, the corresponding gem will disappear.