"Things You Wouldn't Know If We Didn't Blog Intermittently."
Hauyne crystallizes in the isometric system forming translucent, vitreous typically twinned crystals with highly variable color (blue, white, gray, yellow, green, pink).
As a jeweler I would guess cut. I have never seen any stones that couple out of the ground that perfectly cut and polished ;)
That's definitely cut...http://www.mindat.org/min-1833.html
i also vote for cut, based on the forms crystalline structures are likely to take.
Well I was going to say cut but everyone beat me to it....so it's grown in a jar of pickles.
.... but brine or vinegar ?