Obj import -> rounded edges?

[Ikiri]

Hi,

I've got a model of a diamond which I've imported into Keyshot. (I'm using Keyshot 2 btw).
Have a look at the attached screenshot: most edges appear to be rounded, whereas in my original modeling software (C4d), the diamond has sharp edges...

Am I doing anything wrong during import? Or is there a setting somewhere in Keyshot which I need to activate or deactivate?

[KeyShot]

I think you may have to try another format to get the normals right for the triangles.