Onyx is a type of gem imbued with the power of Darkness. They're common, so they aren't worth much. They contain the potential of Destruction.In-game description
Onyx is an item in MARDEK. It can be equipped in either Accessory slot by Mardek, Deugan, Emela, Steele, Vehrn, Zach, Donovan, Sharla, Sslen'ck, Solaar, Elwyen, Gloria, Meraeador, Legion, Bartholio and Aalia.
|Dark Temple (northeast room)|
|Aeropolis Armour Shop pedlar (Market Street) (x3)|
- Equipped by Onyx.