Materia in XIV is a little different than VII's. VII has materia formed in places of powerful magical vicinities, but XIV makes it clear that materia are formed from equipment being turned into their base function. The relic quest even ends up with you converting your relic to make materia to fuel a Zodiac weapon!
I'm of the opinion they "work" by enhancing something aetherially. A weapon with augments cuts better by way of magical edge, armor is enhanced to resist attacks better, or help the wearer move more to lessen the hindrance of wearing it. It's not really defined how much the materia help, but it's certainly an interesting idea.
I'm of the opinion they "work" by enhancing something aetherially. A weapon with augments cuts better by way of magical edge, armor is enhanced to resist attacks better, or help the wearer move more to lessen the hindrance of wearing it. It's not really defined how much the materia help, but it's certainly an interesting idea.