Quick and Easy Buying Guide
Carat weight: 1 carat = 200 milligrams = 6.5 mm diameter. Doubling weight doesn't double diameter.
Diamond clarity: FL/IF/VVS/VS = super expensive, near perfect. SI = best value if you can check a photo for obvious inclusions (defects).
Color: D-G = colorless, expensive, only if you have money to burn. H-J = best value. Can go lower in gold metal settings than white metal.
Cut: Better cut ratings let more light into a diamond, making it sparkle more. Very important property, don't skimp here.
Set a budget and minimum cut (Premium). Go J color for gold and I/H for white metals. Go searching for SI1/SI2 clarity diamonds at James Allen. Pick a diamond with small/no inclusions. Choose a ring setting and buy it risk-free (60-day returns).
1.64 Carat Weight Princess Diamond Shown on a Hand
The precise size of a 1.64 carat size princess shape diamond will vary depending on the depth of cut, but will typically be around 7.1 mm along one square edge. While this picture will give you some concept of how massive a diamond will seem when viewed on the hand, remember that the size of the ring you choose or need could be quite different in size to that shown in this image. Some advice for how to use the information on this page is to initially narrow down your size range, and then to go into stores and actually try a few different sized princess shape diamond rings on, armed with this prior knowledge.
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Digits can be all different sizes, which should factor in to your decision about what shape and size of diamond to get.
