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).
Princess Shape, 1.14 Carat Diamond Size on Hand
When searching on the web for princess shape diamond sizes, you may pick up that the numbers are slightly different across different sites - this is because the size (5.7 mm for this 1.14 carat diamond) depends on things like cut as well. If you have got a ring in your possession and you know the size, you can compare it to the US size six ring shown in the image on this page - this will assist you in getting a concrete idea of the diamond size shown in the photo. Some advice for how to use the information on this page is to initially narrow down your size range; then you can go into stores and try diamonds out in person, armed with this prior knowledge.
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If you're a male trying to calculate the right diamond size to buy for your other half, remember that the stonewill invariably appear a lot larger on the hands of a woman, which are typically smaller.
