Model: plum branch
Units: Millimeters
Render: vray+corona
Formats: 3Ds Max 2014, OBJ

all models https://3dsky.org/users/artem3dsss/models 
_______________________________________________________
Those who work in a 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 - whichever is preferable for you