3D model: oysters on a platter dry white wine
Anti-aliasing model.
Enable TurboSmooth in the modifier stack on the desired objects.
Scene without TurboSmooth:
Polys: 370 580
Verts: 401 374

For Corona render it is recommended to install at least version 1.5 as the glossiness of the materials is adjusted with PBR in mind.
Who works in V-Ray version 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 – which is preferable for you.