Originally Posted by
Shougun
Some possible Materials:
Catalysts, other materias, complex apparatuses (blacksmith, goldsmith can work together to make these devices), liquids for incubation (alchemy), ingredients (essences from spirit bound and collected gear, and perhaps other ingredients found in the wild or crafted).
-The above is to prevent an intense surplus of materia, keeping materia cool and to make solo materia finding less stressful (Random Number Generator is mean npc..). Again would like to mention you can make your own materia (and following a recipie you would know which one you will get (besides HQ, no to very little randomness)) and you may also find materia's off monsters like coblyns, humanoids and special ones off some bosses.