Bones (ItemId: 526)

Bones are the remains of the dead and can be used to train the Prayer skill. They are dropped by most monsters in RuneScape with animal or humanoid appearance. Monsters that do not drop bones include demons and imps, spirits and ghosts, spiders and insectoids, among others. Some monsters drop specific types of bones, such as big bones, bat bones, monkey bones or dragon bones. Normal bones give 4.5 Prayer experience when buried.

Players may also use the Bones to Bananas or Bones to Peaches spells to turn normal bones to edible bananas or peaches. Bones can also be offered at the altar in a player-owned house for 15.75 experience.

25 regular bones are used in the Demon Slayer quest.

Bones spawn on the ground around the Chaos altar, the Bone Yard, the Hill giant part of the Edgeville Dungeon, Observatory Dungeon and Wilderness Agility Course Dungeon.

Trivia

 * Starting at level one and only burying normal bones, it would take 2,896,541 bones for level 99.