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).

0.29 Carat Princess Shape Diamond Sizes on Hand

This article has a handy picture that gives you the apparent size of a 0.29 carat weight princess shape diamond, when viewed in place on the hand of a woman. The precise size of a 0.29 carat size princess shape diamond will vary depending on the depth of cut, but is usually in the ballpark of around 4.0 mm along one of the straight edges of the diamond.

The photo in this page has a ring of L 1/2 ring size; this is around the average size for a female.

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The size of a woman's hand vary a lot between women - being in public is evidence enough - so this picture can only show the apparent diamond size for one particular ring size.

The visual size for this 0.29 carat princess diamond will depend not just on the carat weight but as well on the width to length ratio of the ring finger it is placed on.