sizes key points
- 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.
- To understand diamond size, carat weight should be considered in conjunction with two other criteria:
A diamond's cut grade should also be considered because, as we noted in the cut grade section, when a diamond is cut with the proper proportions, the maximum amount of light (or sparkle) is returned out of the top of the diamond. Thus, when a diamond is well cut, the light reflected out of the top makes it appear larger. In addition, much of the weight of a poorly cut diamond, for example, may be "hidden" in the base of the diamond, making the diamond appear smaller than its carat weight would imply.
It is therefore 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.
It is therefore 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.