Crystal energy rocks!
I am not surprised that it has an observable effect on such a delicate electrical signal as LOMC.
I worked at a metaphysical gemstone
store in the late 80s. Besides meeting a large number of young, beautiful, idealistic and gullible women, I also saw and heard and experienced for myself of a lot of weird and wonderful things related to the presence of crystals and raw minerals.
I still have my collection of minerals I attracted during that time, and I carry various pieces of stones in my pocket for different special events. I drink fresh vegetable juice that is treated with tourmaline to keep it fresh. I dowse with a small clear quartz crystal pendulum. I have found various and sundry benefits from non-traditional uses of mineral gems.
Based on my experience with particular minerals' effects, I would recommend placing a very small piece of raw tourmaline wand with its striations parallel to a small signal wire, especially low voltage.