The essence of the "Great Being of Matter."
The essence of Chattur'gha is also known as the Claw of Chattur'gha. It is in the form of a claw which relates to Chattur'gha's own claws as a symbol of his great physical strength. This is one of the artifacts that Alexandra Roivas uses to summon her ancient at the end of the game. It is also one of the artifacts Pious could choose from.