The Jewel of Gardios once belonged to the late Count Zygmunt Bazan Gardios, Guy Cecil's father. After the Hod War, Duke Fabre took the sword while raiding the House of Gardios, keeping it as a war trophy, displaying the legacy. Guy finds the sword upon entering House Fabre as a servant, and swears to slay his father's murderer, Duke Fabre, with it. However, Guy eventually loses his desire for vengeance, and Duke Fabre returns the sword to him. After completing certain requirements, Guy can execute his second mystic arte, Brilliant Overlord.
- According to a conversation in Tales of the Abyss Drama CD between Jade Curtiss and Anise Tatlin, Jade states because of the jewel on the hilt and carvings on the blade, the Jewel of Gardios's value is probably over 70,000,000 Gald.