Scottish Banded Agate Glass German Frame Pendant

It's a 39/30 cabochon set into a copper / gold lacey frame. The entire piece measures 2 3/8" long and 1 3/4" wide.  Beautiful piece of glass banded agate - couple of bubbles but no chips - cracks or flea bites.  The frame is stamped Germany on the backside. Could be engraved on the backside. Actually have no clue how old it is - was an estate find. Love the amber coloring. I will add a new 18" chain.