Minecraft wiki entry for End_Crystal, associated text: End crystals explode when attacked or damaged in most ways, even by attacks that normally do zero damage. They are not affected by exploding fireworks, and if damaged by an explosion, they disappear instead of exploding.‌[Java Edition only] The end crystal's explosion has an explosion strength of 6, the same as a charged creeper. The end crystal's fire often remains after the crystal explodes. Any ender dragon charging from the crystal when it is destroyed takes 10 damage.