There is no chat or window notification of how much energy is used in making a crystal. It only says 'you made a crystal' or something like that, but nothing like with the other tools that would say -10 energy. I did notice the energy reduction from my overall energy meter, and how I now know it cost me 10 energy. But initially, since it didn't tell me it was reducing energy, I thought, cool, this is like the elements where there is 0 energy reduction. Please include the energy reduction amount on the notification that you made a crystal.