Weapons

Celestial Bronze is mined from Mount Olympus, then forged by the Cyclopes, tempered in the heart of Mount Etna, and cooled in the River Lethe. The metal does not harm mortals, considering them not important enough to injure, but is strong enough to cut through a steel door. It has also been mentioned that this metal glows when in weapon form. It can be melted down to make other weapons, such as bullets. The gun itself could be made from any material, but so long as the bullets are celestial bronze they will kill monsters.

A metal rarer than Celestial Bronze, it's forged in the Underworld and cooled in the River Styx. It is possible that only people or beings of the Underworld can wield this metal (Hades, his children, and other beings that live in or are associated with the Underworld ie. Hecate and her children). Where weapons made from the other Blessed Metals cause monsters to disintegrate, Stygian Iron absorbs their essence, causing them to either not being able to reform ever again or take a longer time to reform. This rare metal can also harm mortals so be wary. Like Celestial Bronze, it also gives off a faint light, which is dark purple in color.