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?