Gravers make excellent burnishers. A flat graver works wonders on
burnishing the edges of bezels and channels. Place the graver in
the same manner you would trim the edge of the bezel or channel.
Then pull backwards on the graver to burnish rather than pushing
forward to cut.
In addition, tips of polished gravers of various shapes can be
inserted into slits, cut outs, crevices, or any other tight spots
and rubbed back and forth to burnish the metal. Brad Simon CMBJ