Stones have been used for healing by human beings for a long time and probably longer than it was first recorded.
The majority of the publications talk about energy and vibrations that help our soul and body. Some even try to explain this phenomenon using the theory of healing micro particles sublimating through the skin.
Scientists still argue about it.
For me it is more important that stones support and help, our entire body and spirit. Creating jewellery from natural stones is very calming and appeared mystical.
I feel they really worked for me in a positive way.