steelbelted necklace

When a person is tied up, usually to a pole, and has a tire soaked in gasoline placed over their head (where the tire rests on the shoulders and head sticks through the hole) and ultimately lit on fire. the result is a slow burning, extremely hot, rubber melting fire. The end result is a charred body from the waist up and wire rings from the tire's steelbelt hung around the neck and skull resembling a necklace.