Barterering norem items

It makes sense to me that I am unable to barter nodrop items, but apparantly I cannot barter norem items either. Is this by design? Log snip follows: 713hp 574m 816mv 12 PM wilderness waning barter earth for brew You can't let go of a mace of earth. 713hp 574m 816mv 12 PM wilderness waning lore mace ---------------------------------------- This weapon, a mace of earth, can be referred to as 'mace earth'. It radiates light. It has been imbued with a blessing. It can't be removed. *snip* 713hp 544m 816mv 12 PM wilderness waning drop mace You drop a mace of earth.