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 0.90 Carat Princess Shape Diamond

The image shown on this webpage shows the ballpark size of a 0.90 carat weight princess shape diamond on the hand of a woman. Carat weight isn't the be all and end all - the type of cut will also play a role in the apparent size of the diamond; a diamond like this 0.90 carat one will usually be around 5.4 mm typically. If you've got a ring around the house and you know what it's size is, use it to compare with the US size six ring pictured - this will assist you in getting a concrete idea of the diamond size in the picture.

The size of a woman's hand can vary hugely - just look around you when you're next in public - so this illustration can only provide the apparent diamond size for a typical size ring. Fingers that are long and slender will change how a diamond appears as much as the diamond's carat weight - so consider other factors as well as the 0.90 carat weight of this princess diamond.

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Later after the diamond is purchased, it's likely you might be pleasantly surprised by how much larger the diamond appears on the female hand, than when viewed by itself .