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).

4.00 Carat G Color SI1 Clarity Good Cut Round Cut Diamond

SI clarity stones like this one are where potential bargains are to be found, assuming the diamond looks good to the naked eye.

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Shape: Round

Carat weight: 4.0

Cut: Good

Color: G

Clarity: SI1

Price: $71260

Certificate: GIA

Depth: 60.8%

Table: 63.0%

Polish: Very Good

Symmetry: Very Good

Girdle: Slightly thick

Culet: None

Fluorescence: None

Measurements: 10.15*10.25*6.20

Item number: 1302225

Click here to see the diamond at James Allen.

Click here to search for other diamonds at James Allen.

This Good cut diamond will suit a person with a limited budget who is more concerned with diamond size rather than diamond sparkle. If you can see the diamond in person or examine high quality photos of the diamond (like the one for this SI1 clarity diamond), this is where bargains can be had - finding an SI1 or SI2 stone that is "eye clean" is a fulfilling experience that translates to less dollars spent. For $71260, you should be getting a nice stone, so make sure you're harsh in your judgement as you look at this stone. Don't ignore properties beside the four Cs, for example girdle thickness - it can be important for reasons discussed in my girdle thickness article.

Most consumers won't see the color in this G color diamond, unless the stone is compared side by side with a higher color grade diamond (something to think about if you're going for a 3 stone ring).

Remember to have a look at nearby carat sizes around the 4.00 carat size this diamond has, because in doing so your choices regarding other diamond properties might become available.