With rounds, I usually cut an opening just slightly smaller than
the diameter of the stone. Then use a heart bur to cut a shallow
seat just a little below the surface of the metal. If you are
careful, you can snap the stone in place & hammer the metal
around it. I follow up with emery, a rubberized silicone
polishing disc on the flex-shaft and then a polished and slightly
pointed burnisher to smooth the inside edge and provide a bright
bezel to reflect the stone. Your method interests me though.
Could you explain it? I’m always looking for better methods.