Bloodmetal
Bloodmetal is a strange form of emotion-based metal, harvested by the demon Auguinare.
Auguinare may harvest Bloodmetal from any creature with life-giving fluids pumping through its veins. Her own blood produces lambent violet metal, while mortal blood congeals into flaking, rusty Iron. Other beings yield metal with distinct characteristics based on the nature of their Essence. For instance, the blood of a Solar Exalt produces Gold, Ligier’s blood forms luminous green Malfean Iron, and the vital fluids of Ululaya, The Blood Red Moon, harden into crimson silver.
Treat an item made from bloodmetal as superior equipment (see Exalted, pp. 133-134, 139, 365-366). Its properties depend on the strength and nature of the imbued passion; an ordinary emotion generates fine equipment, an emotion anchored to an Intimacy results in exceptional equipment and an emotion rooted in a Motivation produces perfect equipment or an exotic ingredient for crafting an artifact or infernal relic. Specific bonuses follow from the nature of the emotion; a sword forged from fear might have high Defense, for example, while one drawn from hate might deal more Damage.
Draining an emotion into metal purges it from the donor’s heart, but it will return with time. If an Intimacy or Motivation is poured into bloodmetal, it is lost. Acquiring a new Motivation to replace one lost in this way requires the usual process of soul-searching and expenditure of two experience points.
Bloodmetal is useful as an exotic component in artifacts of Infernal nature, or which are tied closely to emotion, though those who wear or wield such wonders will find that the emotions from which the metal has been formed permeate the artifact within which they are incorporated, and may come to influence the mind of the wielder.
Source: Eric Minton, pulled from an Ink Monkey Bones blog post