Sanguinesti is a type of blood-red gemstone found in the game Old School RuneScape. It is primarily used in crafting and can be transformed into a Sanguinesti staff, a powerful weapon that heals the user when dealing damage. The gemstone is often sought after for its unique properties and aesthetic appeal. In the game, players can obtain Sanguinesti by defeating certain monsters or through various activities. It is valued for its healing capabilities, making it a popular choice among players who engage in combat. The Sanguinesti staff is particularly favored for its effectiveness in both PvE and PvP scenarios.