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).

Actual Diamond Sizes of a 0.80 Carat Princess Shape Diamond

If you search around on the web to find the actual size of a 0.80 carat weight princess shape diamond, you may pick up that the numbers are slightly different across different sites - this is because the size (5.3 mm for this particular diamond) can depend on the cut, not just the carat weight. This picture will no doubt give you an approximate idea of how big a diamond will seem when viewed on the hand, remember that the size of the ring you pick or need could be quite different in size to that shown in this image. You'll become more knowledgeable looking at diamond sizes online such as this 0.80 carat weight princess shape diamond, but nothing beats seeing it in person.

Long slender fingers will affect how a diamond looks just as much as the carat size of the diamond - so look beyond just considering the 0.80 carat weight of this princess stone.

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If you're a male trying to work out the right size of diamond to buy for your other half, don't forget that the diamond will invariably look a lot larger on her smaller, more petite hands.