A full list of the Materia in Final Fantasy VII is included below broken up into the types of Materia. If you are not sure what color/type the Materia is you can find it in the "Full List" which is organized in alphabetical order.
Allows the casting of Magic spells.
Can be paired with other Materia for added effects.
Allows the use of Commands in battle.
Adds passive effects and stat boosts to a character.
Allows the use of Summons in battle.
Full List of Materia
A full list of Materia in Final Fantasy VII in alphabetical order.
Enemy Skill Materia
A list of enemy skills that you can learn through your Enemy Skill Materia.