The skeleton clock is a great for your living room wall or bedroom. The outer edge of the skeleton clock is made up of spinal cord bones. The 12, 3, 6, 9 O'clock position has a skull. The center of the clock is a cross with a circle connecting the arms of the cross. On the cross is Celtic knotwork designs. The skeleton clock is made of cast resin and the diameter measures 12.3 inches.