I recently purchased a pair of diamonds for earrings (.80 ctw, F, VS2) with platinum backings for about $2,500. I did the requisite research, shopped around, and ultimately decided to go with a small jeweler/member of the GIA rather than a typical retail outlet. I did not ask whether the diamonds were certified but I assume they are not. He indicated that the cut was good (better than the russians are doing??). What does this mean? Am I on safe ground? Do you have suggestions for appraisal, etc.