[lonewolf]

Real Diamonds cost real money.
Assuming a person is looking at VVS1 or Flawless. D or colorless
To get the fire out of any size it come down to the fine points.
Angles,percentages, table size,girdle width and consistency etc. That's why there is such a difference in price for what seems at first to be the same stone as another.
Whatever you buy have it rechecked . You would be surprised how many certified are not as stated.