Exanite

Exanite is one of the rarest substances in the entire universe. Consisting of equal parts of all the primal elements - air, earth, fire, water, life, and logic - pure exanite is almost completely indestructible. The perfect balance of the primal elements in this rare ore also causes it to be almost weightless, making it a valuable substance for weapons and armor. Though some reports claim the Osun have begun to unlock this miracle mineral's secrets, most scholars agree that reliable methods of forging exanite were lost with the Eldan themselves. In its purest form, exanite is completely white, and its unique elemental properties give it an almost otherworldly glow.

Exanite properties
The physical properties of exanite are varied and remarkable. It's near-weightlessness, a side effect of its perfect primal balance, combined with its extreme durability, would make it one of the most valuable minerals in the universe even if it wasn't also one of the rarest. It is rarely seen in its pure colorless form, however, for even a trace imbalance in the primal components of the mineral gives it a vibrant color indicative of the form of primal power that is dominant. Reddish exanite favors primal fire, greenish exanite favors primal logic, and so on. But while many believe one can tell a Mechari's personality and aptitudes by the color of the exanite core that houses their intelligence and soul, this is a myth. The tiny variations in exanite balance are so minute as to have no measurable effect on a Mechari's abilities.