Burnt bones

Burnt bones are used to train the Prayer skill. When buried they give 4.5 Prayer experience. These bones, however, cannot be obtained as an item drop. They can only be found in the Demonic Ruins in the Wilderness. They are no different to regular bones except that they have a burnt look.

Burnt bones were also used as a scam. People sell these bones for ridiculous prices, telling people they are rare. This can be reported under Rule 2 in the Report Abuse form, though the scam is still possible since the addition of balanced trade. because they;re woth 4-5 times more than normal bones.