This blue-white diamond bears a tiny adamantine emblem of a hammer.

Demolition crystals were designed for those who fight constructs, particularly for the servants of wizards who battle enemy golems.
A weapon with this crystal attached deals an extra 1d6 points of damage to constructs, the weapon is treated as adamantine for the purpose of overcoming the damage reduction of constructs and the weapon can deliver sneak attacks and critical hits against constructs as if they were living creatures.

Prerequisites: Craft Magic Arms and Armor, disintegrate.
Cost to Create: 3,000 gp, 240 XP, 6 days.