WHICH OF THESE FACTORS IS MOST IMPORTANT IN THE COST AND QUALITY OF A DIAMOND: CLARITY, COLOR, OR CARAT WEIGHT? I'M LOOKING INTO A DIAMOND THAT IS .77, F, VVSI, 60.8 DEPTH, 56 TABLE, THN-M GIRDLE, NO CULLET OR FLUOR., AND EX. SYM. & POL. FOR AROUND $4900. THIS IS ABOUT THE MAX. THAT I CAN AFFORD BUT SHOULD I GO UP IN ONE CATEGORY AND DROP IN ANOTHER TO GET A BETTER VALUE STONE?