The Gem of Foresight is an essence gem which allows players to evade traps without any cost to Focus, and also improves their Mind attribute. It is a stronger version of the Slick Gem and the Gem of Premonition.
Its location is random.
In-game description: "This object has been called an essence gem by the few who know of its existence, but none of those who speculate on it have ever truly held it in their hand. It gives the wielder a flash of insight into the future, sharpening his mind and allowing him to avoid danger completely, should he choose to do so."