Stone Points (IMAGE) Emory Health Sciences Caption Two stone tool points were made using a prismatic blade technique (left and center), and a bone point or needle (right). Credit Photo by Aaron Stutz, Emory University. Usage Restrictions Must include credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.