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).

Vanessa Minnillo Engagement Ring

After his marriage to Jessica Simpson ended, Nick Lachey ended up in a long term relationship with Vanessa Minnillo, the host of "True Beauty".

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Nick gave Vanessa an Asscher shape diamond set in platinum with side trapezoid diamonds, a ring designed by Bader and Garrin. The center stone is about 4 carats in weight, with a total ring value of over a hundred thousand dollars.