In Final Fantasy lore, the crystals are legendary. Often, elemental objects that have appeared in every game in the main Final Fantasy series. Even in games where they are not a central plot point, there has been at least some reference to them.
Crystals often have power over natural phenomena, and function as a powerful source of magical energy. Many antagonists focus their efforts on seizing the crystals to gain power towards their goal.
Unlike Final Fantasy, they’re no scientific evidence that crystals have power over natural phenomena. Much less evidence they function as a powerful source of magical energy. But why do I think they do?
Crystals in our world happen to be just as ubiquitous. They form a crystal lattice that extends in all directions. We could come to find out that fire and lightning also have a similar crystalline structure.
Our crystals may not be the source of the elements. All forms of weathering have given the crystals their geometric shape, and their various properties. So what’s to say that crystals haven’t taken those properties? And why are the main elements of ice, fire, and lightning?
One more thing to remember is that crystals record. Crystals in this sense have the “memory” of what they’ve “seen”. We use crystals for an everyday purpose such as in electronics. They generate electricity and remember data. And slowly we’re learning to use electronics that the mind can control. These can possibly even influence the mind.
What if the mind is able to tap into the “memory” (so to speak) of crystals; the memory they have in mimicking the various actions of the elements (ice, fire, and lightning)? And what if the mind is able to somehow manifest these elemental actions in the real world.
What we call magic is simply just what hasn’t been studied scientifically. Once we find out how to do this, it’ll be a great stride forward into science. The “wizards” achieved this feat through their arcane techniques…
There’s a gap between how the mind can manifest the elements into the real world simply by thinking it. But it’s possible.