Use a hart bur or knife-edge bur to rough out bright cutting, then clean up and polish with a graver. This will save time doing the bright cut and time spent sharpening gravers. Do the cutting with the bur before you set the diamond, or be very careful around the diamond edge.
To Learn More About Stonesetting
Attend the Bench Jewelers Conference
April 23 - 25 ~ St. Louis, MO
For complete list of Seminars go to: http://benchconference.com/seminars.html