I didn't buy anything this go around, but I was disappointed with a marble that purchased on the previous auction. It was a carnelian ox, graded 9.6, with a pinprick/ding that wasn't mentioned or shown in the pics. I also bought a couple others, with imperfections, that weren't mentioned, shown, or accounted for in their grading. None of them were easy to notice, so I'm thinking they're probably not giving each marble a thorough examination before assigning a grade.