Thomas Prufer wrote:
On Tue, 01 Jan 2019 17:16:26 +0000, Chris Hogg wrote:

You could grind it, but I'd do it by hand: get a flat sheet of glass,
use some fairly coarse carborundum grit (say -80s or -120s) scattered
fairly generously on the glass, wet it to make a paste, invert the
crystal whatever-it-is and grind away using a circular motion.

Wot e said, only I'd use wet-or-dry paper, on a sheet of glass, lots of water.

Shouldnt it be glasspaper?

Ill get my coat

GH