I found a round stone that has Excellent polish and Excellent symmetry but the cut is just Good. My main question is... If the symmetry is Excellent I dont understand why the Good rating for the cut. Isnt the cut grade and symmetry suppose to be similar? The diamond is lovely though- with a G color and has Slight Inclusions. Please explain. 1.28 ct. Do you have a price range that this stone should be in?