How accurate is the IGI for diamond grading? I sent off a pair of diamond studs to the IGI to be appraised and graded. I bought a pair of E-F color, VS-clarity studs on Ebay, but when I received them they looked inferior. I took them into a jeweler and looked at them under a microscope and saw a ton of inclusions. I returned the pair and the seller sent me another pair, but they didn't look good, either. I looked at them under a jeweler's loupe and saw black inclusions all over both of them. When I confronted the seller, he accused me of taking the stones out and replacing them with inferior diamonds. So, I decided to have the replacement pair graded to see exactly what I got before I take action. I sent them off to the IGI, but I'm concerned that they won't be accurate. Any advice would be greatly appreciated. Thanks!