This file is only STL as requested by som users.

Printed upside down in vase mode, wall speed set to 100mm/s. Model is printed in 3DE premium petg filament light grey, makes it look like smoked glas but transparent enough to let much light shine through. Added 0.6 line width to get a stronger base hold and less flimsy walls. Hole fits the european standards for E27 lamp shade 40mm. Side note, it takes a small hand to add the light bulb inside, since the hole is no bigger than 70mm.