This amethyst is carved in the shape of a humanoid skull.

Clerics craft truedeath crystals to aid themselves and others in sending undead to their final rest.
A weapon with this crystal attached deals an extra 1d6 points of damage to undead and the weapon also functions as a ghost touch weapon.

Prerequisites: Craft Magic Arms and Armor, consecrate.
Cost to Create: 2,500 gp, 200 XP, 5 days.