A ceiling lamp with a natural travertine body and a mesh diffuser.

There are 3 sizes in the archive: diameter 42, 47 and 57cm.
https://www.lampatron.ru/cat/item/design-lamps-casing-stone/ 

For Corona render, it is recommended to install a version not lower than 1.5, since the glossiness of the materials is configured with PBR in mind.