Quartz

["Will Johnson" <willj@zzzzzzzzzzz>]

Eric,

I don't consider myself a sculptor by any means but have worked with
quartz for many years in both it's cryptocrystalline (agate) form and in
single crystal form (up to 60# or so). John is correct in suggesting
diamond tooling. You can find cheap plated Chinese tools (I like the 1/2
to 1" ball shapes for hogging out material ($25 or so) ) also small
(under 3") blades and wheels.... as well as much more expensive sintered
tooling. I use tools from both the lapidary (gem-cutting) world and the
stone fabricating (countertop) industry. Sanding and polishing of quartz
is far more an issue than grinding and shaping. The resin/diamond
granite pads will work to a point, but if you want a perfect polished
surface I'd suggest going on to Lapidary-type discs and belts. Doug
Klein at Eastwind Lapidary in Vermont makes the very best at the best
price. These can be cut up and glued to wood or rubber or plastic
backings shaped to fit the hollows of your carving. I'm carrying on a
bit here s o will close with the admonition to ALWAYS USE WATER when
using diamond. http://www.premiergemdesign.com/citscroller.html  shows a
simple quartz (crystal) carving from start to finish.

Good luck!!

Will