Investigation
Does shungite placed near electronics block or neutralize harmful electromagnetic-field (EMF) exposure?
Contextualizes
The best-performing studied 50%-shungite sample reached a reported minimum transmission-power coefficient T=0.13 within a test waveguide; that value is neither a universal percent reduction across all frequencies nor a measured reduction of exposure to a person next to a standalone mineral stone.
Qualifies
The original 2025 Samukhina/Buryak study tested paraffin-and-shungite composite ring samples, 10 mm thick with 0%, 10%, 30% or 50% filler, using NanoVNA V2 S-parameters from 500 MHz to 4 GHz; higher fractions reduced waveguide transmission and changed reflection and absorption. These are physical materials results, not medical outcomes or loose-stone personal dosimetry.