My nieces destroyed 1 of 5 lampshades so i mesearued it, draw it in CAD and printed it with PETG translucent.  It looks a little different because it not glass with white coating inside, so i decided to prit 5 peaces and replace all 5 lampshades with the printed ones.

Printspeed 60 mm/s. Important: Print he upper 5mm  slow with ~40 mm/s to get a nice part. I used 12 shells and 100% Infill at 245C and 0.15 mm Layer.

There are 2 versions of the STL, one without support and one with integrated supportsturcture (recommended).