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Nephelium is a rare transparent metal.


Nephelium is a ferrous metal with all the properties of iron, including the ability to be worked into steel. Unlike iron, it is transparent, resembling glass. It retains its transparent quality when worked into steel or other alloys.

Nephelium ore is rare, and veins of that mineral are only found in areas saturated with magic.[1]


Nephelium is used to produce exceptionally beautiful crystal weapons and armor. Adding certain mineral impurities can color the finished steel, giving the appearance that the blade is made from gemstone.

The whistle Night Caller, called azan-gund by the duergar, is crafted from this material.[1]


  1. 1.0 1.1 The Sunless Citadel (2000), p.32.