Sin Stone

Sin Stones are the embodiment of sin which manifests when an assassin takes a life. They were used to build the Well of Sin, whichh is the source of Ra's al Ghul's extended lifespan.

They can like Nth Metal be used to fortify artifacts. They first were introduced through Assassin Artificer's Capsules.

Obtained from

 * Assassin Artificer's Capsule

Trivia

 * When used to fortify artifacts from the Tools of the Demon set (Lazarus Pit Water, The Demon's Fang, Venom Wrist Dispenser), these sin stones grant 10% bonus XP.