The reason I ask is this, the Primos Power Crystal is plexiglass, not crystal which is the reason you can use sandpaper to roughen rather than needing one of the diamond rougher or silica stones. From armchair chemistry and geology knowlage crystal is suposed to be harder than glass, for example lead crystal which makes that singing sound when you rub the edge of a expensive wine glass (which I will never own). Kinda confusing, if turkeys are so damn smart do you think we can train one to act as a decoy and call also. Seems easyer than figureing out this call question.