Anyone Using Crystals?

Only for my cats' whiskers bedside radio,

Thanks for the advice @elizabeth and @geoffkait.  I took the tourmaline off all live connections just to be safe.  But I am using a lot of it now - several pounds weight - all over inside my BPT conditioners, on most power cable connectors, inside my DAC and in computer audio components as well as all around all my amp tubes.  There is a very meaningful improvement of rich, natural glow in the sound I am now getting, and also better definition in all frequencies.  Very worthwhile. 

Remember the words of P.T. Barnum ... "there's a sucker born every minute."

To be fair, P.T. Barnum probably actually never said that. But he did say people would generally be much better off if they believed in too much rather than too little.