World of Final Fantasy Spellstone Drops

As seemingly no one has ever just made a list:

• Trihyde drops ice spellstones
• Kuza beasts drop lightning spellstones
• Behemonster drop earth spellstones
• Mega nightsqual drop water spellstones
• Elasmos drop water spellstones (can be refought)
• Seaworm drop water spellstones
• Deathsearcher drop earth spellstones
• Minotaur drop earth spellstones
• titan drop earth spellstones (can be refought)
• A Smidge of Micro-envy Intervention Mission (Divasiren will drop the wind spellstones)
• Tiamat Rare Spawn in EX Dungeons drop wind spellstones
• Fire Drill Intervention Mission (Ifreeta will drop the fire spellstones, not the Intervention mission itself)
• Sad Spiral Intervention Mission (Nirvalefor will drop the fire spellstones)
• Buer Rare Spawn in EX Dungeons drop fire spellstones