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 2.57 Carat Diamond Size on Hand

If you are hesitant to put too much stock in a simple picture, you can measure the size of your finger and compare it with the 9.0 mm average diameter for a diamond of size 2.57 carats. This image shows a size L 1/2 ring (British and Australia), which is the same as a US size 6 ring.

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You also have to take into account the length and breadth of your fingers. The apparent size of the diamond is influenced by what it is shown against - the hand - a tiny hand will make the diamond appear proportionately larger, with the reverse applying as well.

Go searching for diamonds this size at James Allen by clicking on the banner below and dragging the carat slider to the appropriate setting:

Actual Diamond Photos from JamesAllen