Where do you find the crushed stone that you have mentioned?

Actually I have chips of turquoise that I powder up myself (turquoise and
malachite are soft enough to hand crush), but I believe that Craft Supply used
to sell powdered stone. Don't remember the chip supplier, it was someplace I
stumbled on when visiting New Mexico. You might also try jewelry maker's
supply firms like Rio Grand (in Albuquerque) or Fire Mountain (somewhere in OR)

Kip Powers
Rogers, AR