I just purchased a diamond necklace for my sister from Blue nile. She is getting married in May. I am so happy for her. It is a GIA certificated stone: Ideal cut, F colour, VVS1 clarity Round .52-Carat Diamond I have a question about the GIA report, what is exactly clarity characteristics affect the clarity of the stone? on the report, it says" characteristics:needle, pinpoint." I know about pinpoint, but how bad is needle????