That is on you.
Until pointed out, you didn't even realize your failure of the spoken voice being sound waves, which affected the formation of the crystals.
I have not said they could denote feelings or meaning. I specifically said the opposite.
I realize that this is normal for you, but you really need to stop substituting what you falsely believe has been said, with that which actually has been said.
Try repeating the experiment.
As it stands, the experiment is repeatable.