Crystals

Crystals are the physical remnants of the crystal that created the universe. They are seemingly impervious to damage and can exist anywhere in the world. They are usually tinted various colors depending on what sort of primal energy influences them. They have many wide and varied effects on the world around them, even ignoring natural laws at times.
Primal Crystals
Primal crystals are extremely rare versions of crystals, very few have been discovered. These have a much more powerful effect on their local area, and usually are much larger.

Manifestation

Color, size, structure can all vary. Mainly occurs as Lesser Crystal, and Primal Crystal.

Sephiroth
"Out of my way. I'm going to see my mother."