There are two models in the scene.
There are no additional plugins.
The model is created in millimeters
The models are called by their proper names; when downloading you can select the option you are interested in.
The model is configured for Corona renderer AND V-Ray

Dimensions
Depth 50mm
Diameter 500mm
https://dg-home.ru/catalog/bra_i_kandelyabry/bra_mantra_jewel_8076/