Hit render. It’s way too
bright, because our sky-
light is still active. Set the
skylight multiplier to 0.0
and render again. If it’s
too bright or too dark,
you need to play with the
V-Ray light material multi-
plier until it looks okay.
You can clearly see the
light is coming from our
big box now, and the light
source also reflects in the
torus knot. The contrast
between very bright light
and black environment is
very good for rendering
glass or metal like objects.