Turned out quite well, however the small ring around the base snapped in a few places when I was removing it from the bed so I improvised and cut it off entirely. I printed this with some glow in the dark PLA to see what it would look like per a friends request.
0.1mm layer, 0.4mm nozzle
Sliced using Cura. Printed at 80% scale, 30-60mm/s (slow), with Hatchbox glow in the dark PLA
Infill is needed to support the very top of each dome, supports were used to hold up the small overhanging rim around the top half of the sphere. No supports are needed for the base.
Since the surface where the two halves glue together is rather big, it's important that it be as smooth as possible so that the the two mate together well. If you have a glass bed then print directly on the bed with brim, otherwise a raft might be a better idea if printing on tape or buildtak. I have a glass bed and super glue worked well on the two smooth surfaces. Hot glue may be better if using a rougher build surface.
If you print any exotic materials like transparent, UV or thermal color changing, or glow in the dark be aware that the infill pattern might show through at certain angles.