Dlarun

Dlarun, also known as icesteel, was a non-natural white metal that was unknown to most people of Faerûn, save for select groups of halflings. The "good folk" were quite secretive about their knowledge of dlarun, often giving misleading descriptions or feigning ignorance if it was ever brought up in conversation.

Description
This lightweight metal was bone white in color with a high polish, that shone green when illuminated by candles or magical sources of light. Considering it was a more esoteric substance, it could easily be mistaken for ivory.

Uses
Dlarun was often used in the creation of small figurines, engraved plates or the pommels of weapons, often in the shape of an acorn, claw or other symbol of nature. If an piece of magical jewelry, or other such decorative item that came into contact with the wearer's skin, it would confer to the wearer a limited ability that allowed them to see through illusions and ignore certain psionic effects. Armor crafted from the metal offered limited protection from fire, and weapons would strike with an icy frost.

This unique metal was not suited for the creation of items that were intended to have an enchanted that was related to flame, such as a flame tongue.

Creation
The formation of dlarun involved digging up clay from certain river beds located throughout Faerûn, heating them up in a crucible and mixing the resulting white flakes with certain oils. The soft, malleable metal was then heated again in a fire whose fuel included specific, secret elements.