Render previews are done in Corona Render 12. The model uses Corona Legacy Mtl. A version of Corona Render no lower than 1.5 is required.
Material conversion to V-Ray was done using the standard V-Ray scene converter. V-Ray version is 6.2

The model does not have a proper polygonal mesh. This was done intentionally to minimize the geometry and weight of the model for comfortable use.

Pendant light - Moderli Birds V3071-1PL

Poly: 14,363
Verts: 14,696

If you are working in V-Ray version lower than 3.1, be careful, as the materials in the BRDF section use Microfaset GTR (GGX). If your version is older than 3.1, the BRDF field will be empty. Choose Blinn, Phong, or Ward – whichever is preferable for you.

For Corona render, it is recommended to use a version no lower than 1.5, as the glossiness of the materials is set with PBR in mind.