Strange Humming Crystal

General Information
This crystal formation is found on top of mountain near the Hieromancer's Halls in the Direlands. It cannot be reached by foot and is only accessible via a Humming Crystal Portal, which randomly spawns in the wild's of northern and southern Osteth. There are two exit portals on the top of the mountain, both of which deposit you at 4.5S 81.2W near the base of the Mountain. Using the crystal yields results in the following message:

The crystal stands mutely...

Hieromancer's Armor Quest
If you use a Glittering Crystalline Key on the Strange Humming Crystal you will obtain a portal gem, the Lyceum Recall Gem.

The glittering key fits neatly into the niche of the humming crystal. The hum grows louder for a moment, and the key reshapes itself before your eyes...

This portal gem will teleport the user (it does NOT summon a portal for multiple people) to the Lyceum, which is located on top of another inaccessible mountain west of the town of Kara. The Lyceum is where mages can obtain their armor.