In my opinion, the definition is a little poor, and you can see the defects under the magnifying glass of 10 times, and everything else is good.

In fact, for ordinary consumers, observing with a magnifying glass of 10 times, color, clarity and cutting are the best three levels. Clara is in charge of the wallet. Fluorescence is a systematic detection, and no fluorescence is more expensive than the same level of fluorescence. There is room for appreciation above 50 points.