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).
1.44 Carat Diamonds
Each point in a diamond's weight is worth 2 mg, so a 144 points diamond weighs 288 mg.
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A way of using numbers to help you compare diamonds is to calculate the cost per carat of diamond. Diamond size means both the carat weight of the diamond and the width of the diamond, and the width of the diamond increases at a much slower rate compared to the carat weight of the diamond.
Something that can catch out men searching for a diamond for an engagement ring is forgetting to take into account where the diamond will eventually be displayed - on a woman's hand, which is usually quite a bit smaller than a man's hand.
Gold cannot be pure, and people cannot be perfect. Chinese Proverb .
Buying a diamond should really be about what you and your partner want, but if it's really important to you, know that the average diamond size in an engagement ring is about half carat, give or take. People say the four cs for a reason - diamond carat size is just one of the four cs and the others are arguably just as important in determining how 'attractive' and 'good' a diamond is.