You can’t eliminate highlights or reflections of any kind, you can only control them.
In very simple terms, all of photography is about capturing the light reflected off an object. No light, no reflection, no photo.
So your simple aim is to build a ‘studio’ around the object, make the light source large enough for a ‘neat’ specular highlight and flag the rest of whatever else appears in reflection, which will include you and the camera.
The bad news is that your chosen subject is one of the most difficult shapes to manage this with. The good news is you’ll learn a lot whilst on your way to getting it right.