Rikard chair:
525 x 575 x H 825 mm
https://mebelcity.com/catalog/stulya/metallicheskie_stulya_disaur_ne_dlya_prodazhi_na_marketpleysakh/64287/ 


Polys: 10,916
Verts: 5,691

The Turbosmooth modifier with Render Iters and Isoline Display modes was applied to the required objects;
FBX file available;
For Corona render, it is recommended to install version no lower than 1.5, since the glossiness of materials is configured taking into account PBR.