Onyx Gemstone

General
Onyx Gemstones are rare crafting materials. The only known locations are:
 * Reward Chests and Hidden Treasure chests in dungeons.
 * Quest reward for completing In the Service of Revenge
 * As a reward for completing all quests in The Fissure of Woe at the Temple of War, inside the Chest of Woe.
 * Rare Material Traders

Use
Onyx Gemstones are used to craft Destroyer Weapons.

Trivia
The art for Onyx Gemstones was previously used as the icon for the Obsidian Shard prior to the update on Wednesday, 29th of June, 2005.