I had worked the edges around the glass too strong so it was very difficult to match them with the lowpoly to achieve a nice normal map. Too much enthusiasm ;). It was easier to sculpt again, good practice too. Look like this now – the frames are not so wavy. Without the glass yet.
@monaloren If you’re really happy with your sculpt you could just change the lowpoly model to match the highpoly model. This is what I am doing with my stones.