This is inspired in Lady Aribeth's sword in the game Neverwinter Nights (2002). Additional inspiration from 3D models by David Boese: http://imsumdave.deviantart.com/
Like some amulets, the handguard (which resembles the game's logo) bears the shape of the eye, which is thought to be a conduit for Morag, a queen of ancient times, to whisper into the minds of her secret agents.
"So as you shiver in the cold and the dark,
Look into the fire and see in its spark—
Watching over you."
(Excerpt from a traditional trail ballad of the Savage Frontier - composer unknown)