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.
Advice: Set a budget, and a minimum cut (at least Premium). Go J color for gold and I or H for white metals. Go searching for SI1/SI2 clarity diamonds at James Allen, and pick the diamond with no or small inclusions. Pick a ring setting and buy it risk-free (60-day return policy).
Best Selling Diamond Engagement Rings at James Allen
Often the best way to decide for yourself is to look at rings that others with good taste have chosen - shown below are some of the best selling diamond engagement rings from James Allen. Just click on the picture of a ring to investigate it further.
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 A nice 2mm Comfort Fit 18K White Gold Solitaire Engagement Ring |
 Same as last but with 2mm Knife Edge 18k White Gold Solitaire Ring |
 2.5mm Comfort Fit 18K White Gold Solitaire Engagement Ring |
 18k White Gold Spiral Diamond Solitaire Engagement Ring |
 18k White Gold 2.1mm Timeless Engagement Solitaire Ring |
 18k White Gold Six Prong Wire Basket Engagement Ring |
 18k White Gold 2.2mm Pave Set Diamond Engagement Ring |
 18k White Gold 2.1mm French Cut Pave Diamond Engagement Ring |
 18k White Gold 1.9mm Frame Pave Set Diamond Engagement Ring |
 18k White Gold Round Raised Pave Diamond Engagement Ring |
 18k White Gold 0.30ctw Common Prong Diamond Engagement Ring |
 18k White Gold 3-Stone Channel-Set Diamond Engagement Ring |
 18k White Gold .60ctw Princess Channel Engagement Ring |
 18k White Gold Bow-Tie Channel Set Diamond Engagement Ring |
 18k White Gold Common Prong Six Diamond Engagement Ring |
 18k White Gold Bezel & Pave Set Engagement Ring |
 18k White Gold Common Prong Four Diamond Engagement Ring |
 18k White Gold ME1 by Danhov Designer Wedding Set |