Bloodstone

The Bloodstone counts as a distinctive ability held by the noble ranks among demons. Producing one stands as genuine proof of nobility and a confirmation of a demon's very existence. Efficient growth in power flows only from being able to create them, and forming a Bloodstone is the threshold a demon must cross to count as a true noble. Reaching that rank is, in turn, the qualification needed to inherit the throne of the deceased King of Demons, the White Flame Monarch Baran.

At its core a Bloodstone is highly purified demon blood, the most effective means a demon has of taking in and channeling demonic power. Nobles originally gathered them from lower-ranking demons as a form of tribute, and the stones served several purposes, chief among them giving nobles a way to hold onto their strength by steadily absorbing the blood of their lesser kin. They also act as the channel through which a noble can pass power to descendants and keep a bloodline strong. In appearance the Bloodstone is a small black bead.

The Bloodstone belongs to the world of demon nobility as a whole rather than any single bearer. Stardust was devised by low-level demons to imitate its effect, and Vulcan stands out as the only known noble demon unable to produce a Bloodstone at all.