Quicktongue Materia III - Question?

[Coatl]

I was always under the impression that any SB item, you can get any materia of the stats of said item. So, if the item has spell speed, then you might get a materia with spell speed.

It is pretty random really..

Any battle related thing you convert can be ANY battle related materia. A militia robe (i55 mage set) can turn into Vitality III, while the heavy militia (i55 tank set) can turn into savage aim III.

Craft and gathering convertible items are more intuitive due to there not being many materia of that type to begin with. Convert a gathering ring and you'll get gathering materia! Convert a crafting ring and, you guessed it, you'll get a craft materia.