House Adamant is an Imperial Knight house that is known to control an entire world by itself, thus making it one of the so-called "Great Houses." House Adamant is of the Questor Mechanicus and gives its direct fealty to the Adeptus Mechanicus.
Its house motto is "Unyielding, Unrelenting."
The colours of House Adamant are not recorded in Imperial records.
The arms of House Adamant are not recorded in Imperial records.
- Codex: Adeptus Mechanicus (8th Edition), pg. 57