Ciridium is a material that was part of the construction of Mandalorian armors. This material was mentioned in Ba'jurne Kyr'tsad Mando'ad, which served as a manifesto for the Death Watch, a breakaway Mandalorian faction. It is believed that Tor Vizsla, the leader of the movement, wrote the document. However, Jango Fett, who was an adversary of Death Watch, questioned whether it was truly authentic. Later, Boba Fett, Jango's son and a bounty hunter, included it in The Bounty Hunter Code, a book.