Free download of HDRI maps in 4k
One of the easiest ways to get nice reflections on any surface, besides turning on the mirror/ray trace property of the material, is with the use an environment surrounding the object. This way we will actually have something to be reflected. For a studio scene this can be solved with the use of large planes emitting light, which results on some really nice reflective surface. And with architectural scenes we can use HDRI maps that depending on the resolution of the map, could result also on some really nice reflections.
If you don’t have any HDRI map, here is your chance to get six of them for free. An artist called Jeff Patton just posted on his blog six HDRI maps in 4K resolution ready to use! Below you will find a sample of one of those maps.