Quartz crystal when properly sized and placed may have some benefits in reducing vibrations
There are other crystals ... whose name's escape me at this moment ... that when heated will give off an Ion that is approximately equal in magnitude but opposite in phase with the RF smog surrounding your components .. because these Ions are 180 degrees out of phase with the RF they may cancel or dissipate some RF
I believe this is what the Audio Magic Next Gen Plus does ... there is a small grid heater inside the box that heats the specific crystals which give off this dissipating Ion there by dissipating some RF that is present inside our components
There are a number of crystal based devices on the audio market that may operate on this principle ... but one must ask themselves when looking at their cost ..,.
"Is the Juice worth the Squeeze"
Want more conspiracy theory ... Himalayan Salt lamps are purported to have a health benefit ... here million year old salt dating back to the Cretaceous period when dinosaurs roamed the planet is mined in the lower Himalayan mountains
When heated the Ions given off by the salt in the lamp will help dissipate water .. dust and allergens in the surrounding air ...by removing these particulates it may also help by reducing the resistance they present when suspended in air to the sound wave propagating from your speakers ... possibly improving your systems sound
I'm sure my post and this thread will generate plenty of ... "Negative Waves" ... but now we are dealing in Quantum Physics .. which I know nothing about ;-)