Here's an absolutely cute, Natural Horse Head Diamond.
We got it from the cutter, no GIA (yet). It's priced based on a grade of G/I1. I think it will come back F... or better.
In terms of imperfection, there is enough stuff going on to earn it an I1, but none of it is black carbon. None of it spoils the brilliance at all.
The shape is really nice.
The little guy is looking left, for what it's worth...