A virtue stone is a small, colorful, round shaped item. They are the magical currency in the world of Oblivion, allowing players to purchase special items only obtainable through the Crystal of Virtues or by paging a Game Master.
They are generally called vstones, they are account-bound and non transferrable.
They are obtainable from Icon Quests, GM hosted events, Loot Chests and loot on monsters in general.
A Virtue Stone may look like this:
The Crystal of Virtues looks like this (and can be found in the travel hub!: