Mold the brass bezel lace around the cameo and then soft solder together.
Use Win-Ox™ to darken the solder and then glue the bezel lace to the cameo.
Use duct tape to create a work surface; one strip of duct tape sticky side up and two strips to hold stick tape in place. The sticky surface will keep the ball chain in place when gluing chain to the side of the glass bezel.
Glue cameo to glass bezel.
Glue two stretchy rings to a brass strip cut to size and filed smooth.
Once cured, glue both rings to the flat sruface of glass bezel.