Ella eyed the stones the professor was holding curiously. Hmmm. What could stones like that be used for in relation to Divination? Well Ella had read that people sometimes read tea leaves. Maybe they could read stones as well? "Professor, I was thinking about tea leaves and how they create shapes at the bottom of the cup...like symbols. Do the stones do something similar? Maybe if you shook them up and let them fall or something? Then you could um-read there meaning."