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).

0.86 Carat Weight Princess Diamond Shown on a Hand

This article has a useful illustration that gives you the apparent size of a 0.86 carat weight princess shape diamond, when viewed in place on the hand of a woman. 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 (5.3 mm for this 0.86 carat 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 female hand, remember that the size of the ring you pick or need may be significantly larger or smaller than the size 6 in the picture.

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Fingers that are long and slender will change how a diamond looks as much as the diamond's carat weight - so look beyond just considering the 0.86 carat weight of this princess diamond. If you're a male trying to work out the right size of diamond to get your other half, don't forget that the diamond will invariably appear a lot bigger on her smaller, more petite hands.