Diamonds with the highest carat weight do not always appear largest. Although weight is important in determining the diamond’s size, the cut of a diamond makes all the difference. A well-cut diamond will seem larger than a poorly cut diamond because of the way it reflects light, even if both diamonds have the same carat weight. Furthermore, different diamond shapes and dimensions can impact cut quality and cause variations in brightness.
Diamond Cuts and Shapes . Actual sizes vary within the same weight bands depending upon the cut grade
Round
Typical sizes of an Excellent Cut Round Diamond
Cushion
Typical sizes of an Excellent Cut Cushion Shape Diamond
Oval
Typical sizes of an Excellent Cut Oval Shape DiamondTypical sizes of an Excellent Cut Pear Shape DiamondTypical sizes of an Excellent Cut Princess Shape DiamondTypical sizes of an Excellent Cut Asscher Shape DiamondTypical sizes of an Excellent Cut Emerald Shape DiamondTypical sizes of an Excellent Cut Heart Shape DiamondTypical sizes of an Excellent Cut Marquise Shape Diamond