ENIGMA wall lamp series in the form of a combination of disc-shaped diffuser and LED ring from lampatron
Dimensions: 300 * 400 mm
Materials: Metal, Acrylic
Colors: Gray, Red, Blue, Burgundy
https://www.lampatron.ru/cat/item/design-lamps-enigma/ 

For Corona render, it is recommended to install a version of at least 1.5, since the glossiness of materials is adjusted taking into account PBR