Heart Crystal

A crystal heart is a red, heart shaped stone that can be found underground, in the Underworld and in Dungeons. It may also be obtained from killing bosses. You can obtain a life crystal from it if you smash it with a hammer. Life crystals can be used to increase a player's maximum health by 20 points (one heart) with each crystal used, up to a maximum of 400 health. After maximum health has been reached, a player cannot use any more life crystals, though they can still use them to play the associated animation and sound effect. It should also be noted that when a player first uses a heart crystal, a Nurse will arrive in the player's world, provided she has a room to stay in and there are no other nurses in that world.

In addition the player may hear a spell-like sound clip when near a crystal heart.