Here you will find a list of the various Summon Materia you can pick up while playing Final Fantasy VII (MP: shows how much MP is used every time you call that specific summon)
Powers: Elemental Wind; sometimes causes Stop
Location: Can be found at the Chocobo Ranch from a chocobo.
Powers: Elemental Ice
Location: Gained from a small girl in Junon.
Powers: Elemental Fire
Location: Received after killing the first Jenova.
Powers: Elemental Lightning
Location: May be found in the chocobo jockey room at the Gold Saucer.
Powers: Elemental Earth
Location: Discovered inside the destroyed reactor at Gongaga.
Powers: Gunge Lance, Steel Bladed Sword; Sometimes causes KO
Location: Found inside the safe in the Mansion in Nibelheim.
Powers: Elemental all
Location: Discovered within the Sleeping Forest.
Powers: Non elemental damage
Location: Gained in the Temple of the Ancients
Powers: Elemental Holy
Location: Found in Gaea’s Cliff
Powers: A more powerful version of Bahamut
Location: Found in the Whirlwind Maze in the Crater.
Powers: Elemental Water
Location: Gained after killing Godo in Wutai.
Powers: Elemental Fire; sometimes revives KO’d party members
Location: Found at Fort Condor.
Powers: Inflicts negative status effects on enemies
Location: Gained from the crashed Gelnika.
Powers: A yet more powerful version of Bahamut and Neo Bahamut
Location: Received at the Cosmo Canyon (Huge Materia)*
Powers: Elemental Wind
Location: Found in the Ancient Forest.
Knights of the Round:
Powers: The power of 13 knights, deals great damage
Location: Knight’s Island Materia Cave (Uncharted Island in the North East)**
* Requires Bahamut and Neo Bahamut
**Requires Gold Chocobo