you might want to look into the beneficial effects of Quartz and Tourmaline in cleaning up electric currents as propagated by e.g Furutech‘s NFT products or Nordost, indeed Acoustic Revive et al
had no idea - been using natural crystalline Tourmaline round power cables and transformers for well over a decade now. Also has synergies with certain other devices. It has a grain almost like wood which makes it very directional in its application.
I have also had quite a lot of success with Citrine (a form of Quartz) and Fluorite, (which can have quite powerful effect), but applied rather differently