“Because there is a combination of the four Cs of quality, there will be infinite ranges within every range of cut and weight. The ranges I used with the four Cs for price range comparison of each round-cut carat size are as follows:
Color: G color or better
Cut: Good or better
Clarity: VS2 or better
Carat Weight: Within .05 +/- the round carat. For example, the carat weight range was .95 to 1.05 for one carat, 1.95 to 2.05 for a two carat, etc.
“To give you a good idea for pricing out when it comes to diamonds, imagine asking your realtor to evaluate the price of a two-bedroom house. It would depend on a lot of different things—location and neighborhood, square footage, condition, and style of home, etc. Like with anything of significant value, pricing depends on the relative scarcity of the diamond and customer demand.”