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).
1.27 Carat Diamonds
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.
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A fine quotation is a diamond on the finger of a witty person, but a pebble in the hands of a fool. Unknown Author .
So how good do you think a 10 carat diamond which looks a horrible uneven black colour would appear on an engagement ring? Exactly - diamond buyers need to also consider other properties such as the colour of the stone, which is not picked correctly can negate any attractiveness of having a very large diamond.