Easy to print in 2 parts. I printed in PLA using Prusament Galaxy Black & Hatchbox White. After printing cut the tabs off the white parts and press them into the black ball. Make sure to line up the center dots correctly as they are different and fit tight. on 1 of the 10 or more I made the outer ring came off. A dab of super glue fixed it. I did them on a Mini+ and the settings I used were .15mm Detail, 20% infill no supports needed.
It also looks good if you use yellow instead of white.
The author hasn't provided the model origin yet.