The official GemStone IV encyclopedia.
Verlok feathers are feathers which the verlok demon will molt. They come in a variety of colors, corresponding to the color of the verlok. They contain a single rub of the Light (205) spell. They are also crumbly.
A smoky gold verlok feather falls to the ground off of a sapphire-eyed ora verlok'cina. > Zuzana picks up a smoky gold verlok feather. > Zuzana rubs a smoky gold verlok feather in her hand. The area becomes brighter. Her verlok feather suddenly disintegrates!