A horn made of white bone. It's tone is sometimes described as unearthly. The sounds emitted from the horn can be heard for great distances. They at times appear to inspire those who hear their melody.

During the reign of Queen Gimax, a young Khathandor, still a priest, comes across an ivory horn in the Sacred Caverns of the Insectoid Hive;

Inside, you discover an ivory horn.

Khathandor is immediately fascinated by it. “We will keep this artifact in our sanctuary and decipher its meaning.” He places the horn on an empty shelf, but continues to stare at it intently. - The Hive (GS-ADV3)