It's a 3.25" coaster, for drinks (or in this case, a hydraulic coupling and a not-quite-accurate reproduction we were messing with for use as a greeblie).
This is provided in two STL files; that seems to be how Cura's dual-material workflow works--this was our first Cura-based dual-material print so wanted something easy, but still interesting, to test it out. There's the outer shell (file 1) and the (pink?!) filler STL (file 2).
Excuse the metallic pink filament in the hero shot... got it for a specific project and now it's test print material. The warped sphere pattern was itself an experiment; we're using something similar for some baseboard heater riser grills. It started off life as a laser cutter project, and now it holds drinks.