Cursed Bone

Cursed Bone is an ingredient used for the Alchemy skill.

Use
Cursed bones are used to make Mana Potions as part of the Alchemy Skill. To make the potion you require an Alchemy Table and the following resources:
 * 1 x Cursed Bones
 * 3 x Lemon Grass

Source
Cursed Bones is a loot drop and can be obtained from:
 * Lich
 * Bone Magi
 * Ghoul
 * Mummy