Everything is made up of some kind of "vibrational energy". However yes crystals can do some fancy things because of their structures and consistency with various kinds of energy. Not to mention there are many uses like refracting light and doing all kinds of neat things.

As far as being used for healing etc I don't really buy that entirely. I just think people like them they look pretty. I don't think they exert any great effect on human beings unless being used to direct x-rays towards our heads etc. The rest I think falls into the placebo category unless some serious evidence is presented anecdotal reports about squeezing some rock and feeling better doesn't really mean much. While throwing around terms like vibrational energy sounds nice it also does not describe much, what kind of energy?

I notice many people have reports about tripping and getting energy given off by crystals. I think its simply some kind of emotional attachment one had to the crystal before taking the drug. On psychedelic drugs anything of value and wonder can become even more valuable even more wonderful and even more magical. But then again I could be wrong. Don't believe everything you hear or think you hear.