Round golden mirror flower.
diameter 60 cm

In the mirror material, dust and traces of rubbing, to get a clean reflection, turn off the Roughness textures.

Corona 7
Vray Next 1
Additional plugins are not used.

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.
Those who work in V-Ray versions 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.