Mona is a pendant lamp designed by Lucie Koldova.?The Mona collection is based on the concept of penetrating forms.?It also features dimmable tubular LED light sources, each with a different color temperature. With lighting you can create the perfect atmosphere in any room. Choose bright lighting for a cheerful room and soft lighting for a private space. Mona pendant lamp is very versatile and therefore also suitable for the room of your choice. The light source boldly traverses the ample volume of smooth hand-blown glass to reveal the exciting tension inherent in the design. However, the essence of the collection lies in the unconventional construction and refined combination of materials.

V-Ray versions are lower than 3.1, be careful, in the materials in the BRDF section there is Microfaset GTR ( GGX ), if your version is older than 3.1, then the BRDF field will be empty. Choose Blinn, Phong or Ward - whichever suits you best"

For Corona render, it is recommended to install a version of at least 1.5, since the glossiness of materials is configured with PBR in mind.

link:
https://www.simiglighting.de/products/mona-glass-pendant-lamp?variant=6295638