Next I open up the holes with a flame bur then a setting bur to create a seat. Most my seats are a tad small so I use a knife graver to open it up enough to fit a stone.
Once all beads are finished I am now bead set. I then take my flat graver and cut behind the beads to clean things up, remove stray marks, and create nice angled surfaces to reflect extra light. This is bright cutting and together it is called "bright set." There are many variations of bright set but the main idea is the setting surface has been angled so that it reflects more light creating a "brighter" look.
The opal setting was quite tight already, but just to be extra safe since it was just a half bezel I epoxied AND set metal over the stone. I pretty happy with the finished product, though the bright setting could be a little cleaner. Also: don't bright set periot. Just. Don't.