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).
2.94 Carat Diamond Size on Hand
If you don't want to rely entirely on pictures like this, you can measure the width of your finger and compare it to the 9.4 mm mean diameter of a diamond of size 2.94 carats. Your fingers could be quite a bit thicker or thinner than the fingers shown in the photo, which are on the slim side - keep in mind yours probably look quite different.
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Go searching for diamonds this size at James Allen by clicking on the banner below and dragging the carat slider to the appropriate setting:
