Does anyone else use gems?

If anything, the power any gems could have to heal is actually the power of the person believing in them. Really, they are nice to look at, really pretty. I like gems and geodes and all that stuff, but... I don't think they have healing powers themselves. (Heh, I love magnetic rocks, so fun to play with. ) Anyways, isn't it sort of like those medical tests were they give the person sugar pills and they feel better because they think they're taking the real pill?

Placebo effect as i posted earlier, the power of the mind over the body is amazing, but it can also backfire...

Example:

Doctor: sir take this pill (placebo in disguise) it will make you feel better, it might give you stomach ache and such. (disguising the after effects of the real medicine)

Patient: doctor the pill you gave me it didn't cure me, and it gave me stomach aches.

there have been medical cases of such things happening, what i gave is a raw example, not necessarily exact for the actual thing happening.