I am new to this forum. I just recently upgraded my stone and purchased a RB 1.75 F SI2 stone. It is GIA certified and has an ex, vg, ex cut, no Florescence, and no culet. On the HCA, it scores a 1.3. It is absolutely beautiful in person, very brilliant. However, when I got it home, I noticed that I could see the black inclusion that was plotted, with my naked eye. I was so disappointed when I saw it, as I thought SI's were supposed to be eye clean. However, I have since learned just wht this term means and realize that even some VS's are not eye clean. Anyhow, the unfortunate thing is that the flaw is located right near the center of the table. I really have to stare and search for it, however, at certain angles and lights, I can definitely spot it. I have to say, it really looks like a small black spec of dust when I do see it, but it still kinda bugs me. The rest of the stone is very clean. I didn't notice it at all in the store. Anyhow, I am torn between keeping it, because it's so brilliant and bright, or looking for something else. I paid 16800 for it. Thoughts, advice?
Since then, I almost never ever notice this spot. I just needed some affirmation that it was ok and normal. I wonder if you sit back and just view your diamond as if your admiring it's beauty rather than critiquing it, if you will start to feel as if the inclusion isn't as troublesome? It sounds as if others would never be able to locate it by a causal look or even assessment. Some people like to think of these small inclusions as beauty marks, you will always be able to identify your stone by this teeny tiny imperfection. 
I hear you! There are eye clean SI2's out there, they are harder to find but you can do it. I'd look for stones with twining wisps and feathers or needles that don't cause any durability risks to the stone. I shy away from clouds unless I can actually view the stone in person, because you can't know what depth they have and if it will affect the brilliance of the diamond. If it doesn't affect it's performance then they are a decent inclusion as well. I've found that it's more difficult to find an SI2 that doesn't have some sort of inclusion under the table, but if it's small, white and located deeper inside the stone then it can still be very hard to locate. I have a crystal under my table but face up I can't see it at all, even knowing where to look, however from the side and in good light I can locate it. Being able to see inclusions through the pavilion don't bother me so long as they are white and not obvious. 
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