What exactly is a Quartz Geode?
Quartz doesn't have any powers.
Onyx is actually a cryptocrystalline variety of quartz. It has all the properties that quartz has , except that it's crystals are always microscopic. Neither quartz, nor the variety of quartz have any magical powers
I think he is referring to piezoelectricity. That's the compression of a crystal to get electricity (notice the quartz watch you might own). And yes onyx does, most crystals do.
