Distinctive stone mask from [[Jojo no Kimyou na Bouken]] Part 1: [[Phantom Blood]] and Part 2: [[Battle Tendency]]. An ancient Aztec artifact that bestows vampirism on a human when brought in contact with blood.

[spoiler]The mask was invented by [[kars (jojo)|Kars]] of the race of "super-vampires" called "Pillar Men" to transform them into so-called "Ultimate Beings" when used together with the [[Red Stone of Aja]].[/spoiler]
石仮面