Cold iron

Cold iron was a type of iron mined deep underground. It was forged using a special process at lower temperatures than normal iron or steel in order to preserve its delicate properties. It was famed for its efficacy against fey creatures, and was also effective against eladrin and demons. Some sources stated that ghasts were more easily harmed from cold iron weapons

"Now, cold-wrought iron does not just mean an iron weapon that is cool to the touch. Oho! Many sods learn the truth the hard way — the dead way"

- Xanxost the blue slaad clearing up a misconception.

Cost
Cold iron weapons normally cost twice as much as their standard counterparts, and enchanting them cost an extra 2000 gold pieces.

Notable Cold Iron Items

 * The rare holy avenger blades prized by paladins were forged of cold iron.


 * The wizard Sememmon possessed masterwork daggers made from cold iron.


 * Cold iron was known to be forged into thick manacles, used to restrain wizards, containing their magical abilities. Such manacles were also known to be used on fey, preventing them from teleporting.