3. DIAMOND CARAT WEIGHT
Carat is specifically a measure of a diamond's weight, and by itself may not accurately reflect a diamond's size. We tend to evaluate diamond size by viewing it from the top because that is how diamonds are presented to us when set into a ring.
As the name suggests, carat weight specifically refers to a diamond's weight. However, much as a person's weight does not necessarily correlate with height, carat weight, by itself, may not accurately reflect a diamond's size. To gain a precise understanding of diamond size, we recommend considering carat weight with two other characteristics: 1) the distance across the top of the diamond measured in millimeters, and 2) the diamond's cut grade.
It is possible to have a diamond of a lower carat weight, but higher cut grade, that appears larger than a diamond with a larger carat weight, but poor cut.
Diamond prices jump at the full- and half-carat weights. Diamonds just below these weights cost significantly less, and, because carat weight is distributed across the entirety of the diamond, small size differences are almost impossible to detect.
To choose the best carat weight of diamond, consider the size of her finger, the size of your setting, and your budget.