Destroy the item equipped on the target's body.
Armor won't help the heart stay sharp... Shellbust Stab!
Crush Armor is an ability learned by the Divine Knight, Rune Knight, and Sword Saint classes for 200 JP. It destroys the target's equipped armor and inflicts non-elemental damage to them with a range of 3, but in the PSX version did no damage to monsters.
Damage and reduce DEF and SPR for one enemy
Crush Armor is Delita's exclusive materia, which was available during the Orbonne Monastery Vaults event. It could be obtained by spending 6,000 auracite shards on King Mog's reward shop. Crush Armor allows Delita to deal physical damage (1.9x) to a single enemy and reduce the target's DEF and SPR by 40% for three turns. It costs 20 MP.
Crush Armor is also an enemy ability used by Loffrey.