Aether explainations and exceptions

[Sakasa]

So I encountered an npc (Will edit with name) in Old Gridiana that speaks of a "professor" that while understands that corrupted crystals absorb aether theorizes that there is another variation that exchanges aether into different values such as fire -> ice.

So with the collective understanding we have the normal crystals which are for the sake of argument similar to Magicite, Corrupted crystals similar to XII nethicite, but the conversion is a new idea, and one could say even self weaponized against primals. But then I thought what if the crystal is the element Ramuh has blamed on man. Light and Dark. So light crystals and dark crystals could work like how prisms work on light so that is just naturally splits aether into an array.

But if Aether is born for both the birth of life and the death of it wouldn't the "Crystal" just be actions, events, and history of the living and then the natural manipulation of it that produces the crystals? The monk story line shows that war zones, and great battles have significant draw or creation of aether to the point where it could easily be used to strengthen one , or manipulate those around it, but its just free flowing aether so a chain reaction like the airship explosion Battle of Silver tear would be required to crystalize it.

But then I thought about the job soul stones. One could say they are no different the Auracite from Tactics or the Braves in the relic quest where it just eventually occurs. So if enough death occurs would a dark crystal break into existance? Same for life (Eorzea summer of love, Baby Boomers?) could a light crystal be born?