"With quartz crystal frets, you get clear tone and extended sustain, because the density of the quartz keeps the string’s vibrational energy from going through or around the fret, where that energy would be lost. The string follows the the same molecular structure as the quartz, a single helix pattern that makes the string fully tunable, only in RPS. This not only boosts the sustain, it produces a warmer, fuller, more powerful sound, that makes a stock metal fret guitar sound flat."

Well, that tells me all I need to know.

Okay I'll bit, what is "nixnarf"?

I propose an experiment: find a quartz crystal and rub a guitar string on it and see how it holds up. I bet it starts to chip and wear without much effort. I could be wrong, but I can't imagine it will be better than stainless steel.

"With quartz crystal frets, you get clear tone and extended sustain, because the density of the quartz keeps the string’s vibrational energy from going through or around the fret, where that energy would be lost. The string follows the the same molecular structure as the quartz, a single helix pattern that makes the string fully tunable, only in RPS. This not only boosts the sustain, it produces a warmer, fuller, more powerful sound, that makes a stock metal fret guitar sound flat."

Well, that tells me all I need to know.

"With quartz crystal frets, you get clear tone and extended sustain, because the density of the quartz keeps the string’s vibrational energy from going through or around the fret, where that energy would be lost. The string follows the the same molecular structure as the quartz, a single helix pattern that makes the string fully tunable, only in RPS. This not only boosts the sustain, it produces a warmer, fuller, more powerful sound, that makes a stock metal fret guitar sound flat."

Well, that tells me all I need to know.

Mohs Hardness

Stainless Steel 5.5 - 6.0
Quartz 7.0

This would be cool why ?

Anyway, if hardness was what one was after ceramic would be a good choice or high carbon hardened steel or diamonds or carbide.

Wouldn't crystal be vulnerable to shattering if you were accompanying a singer who hit just the right notes with the right volume........ "Just sayin"......... I mean I saw that on a commercial on tv once or maybe Bigfoot told me, I can't remember.

L.

I'd be pretty impressed with a player who could fracture stone with his fretting power

If polished to jewelry smoothness then I doubt they would wear strings noticeably before they were so gunned up from playing that you'd change them anyhow.