by KristinTech » Nov 5, 2018 The rainbow ball is near my thumbnail in the above pics. Below, it is “thrown” forward. Something else that this CBI does that I have not been able to recreate with my other diamonds— the fire it literally throws out (in a rainbow fireball?!). What am I looking at here? Is it a side facet that is making the “ball” appear? That is definitely another thing I’ve noticed about this diamond as compared to my other diamonds—the sides and underside also seem to scintillate as an extra surprise.