Crystalline Armor

From SEWiki

Crystalline Armor requires an operational shield generator on the ship in order for its special ability to work. Every hit that does non-armor-skipping damage to the hull will cause the shields to be recharged! Only hull damage counts towards this recharge, up to a maximum of the total crystalline armor ability points on your ship. The end result is a damaged ship, with extra shields to protect against the next attack. (Suicide Junkie)

Effect vs. damage amount. If the total CA ability amount is roughly equal to or greater than HALF the damage of a single weapon hit, then the Crystalline Effect will reduce damage by 50%. If the total CA ability amount is less than half the damage from a single weapon impact, then it will act very similar to Emissive Armor, and reduce damage by its ability amount. If the CA ability is greater than the weapon damage, AND the weapon damage is less than half the hitpoints of a CA component, the damage will be completely negated. (Suicide Junkie)