Astrological Gemstones

The theory of how they work is based on the composition and crystalline structure of each type. It is believed that each type vibrates at a different frequency and is comparable to other energy healing and color. They work by taking the skin that transmits energy.

they do not work.

and all the first stones really do ...??? I do not think there is no evidence ... if its there .. not tell me ....
If we assume they work THT .... then the above two possible reasons .. the passage of light makes more sense ..... stones have different refractive index and according to her, they light passes particular wavelength in our body ... In the absence of light, these stones are stones actually only!

What to believe?