I do not believe in the effectiveness of this sort of thing. I believe in scientific proof and there has not been scientific proof of the effectiveness of this sort of therapy. I think that if this type of therapy really worked (in any other way than as a placebo) there would be scientific proof of it.
I think that there is a certain segment of the population that has come out of the hippie and/or New Age movements that is prone to believe in these kinds of "natural" cures. I am not one of them and I do not believe in this kind of therapy.
Lithotherapy is an alternative therapy that various diseases using semi-precious or precious minerals and crystals.
Passive lithotherapy means wearing the stone as pendant, bracelet, ring or kepping the therapeutic stone in the pocket.
Stones can be kept in certain places in the house, under a pillow or door.
Whatever the use of these stones is, it is important to wash them regularly, keeping them submerged in water for at least 2 hours. Remember that these rocks store negative energy.