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).

0.30 Carat G Color VS1 Clarity Ideal Cut Round Cut Diamond

Is it really worth throwing money at a "pure" white diamond in the colorless range, when you can step a little outside to this G color, VS1 clarity diamond and save some serious dollars.

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Shape: Round

Carat weight: 0.3

Cut: Ideal

Color: G

Clarity: VS1

Price: $620

Certificate: GIA

Depth: 61.2%

Table: 58.0%

Polish: Excellent

Symmetry: Very Good

Girdle: Thin to medium

Culet: None

Fluorescence: Medium blue

Measurements: 4.38*4.34*2.67

Item number: 1314589

Click here to search for other diamonds at James Allen.

For more information on the "Thin to medium" girdle for this diamond, check out the article I wrote on girdle thickness. If you eyeball this 0.30 carat stone and think to yourself, "that diamond is too small", think about whether you can compromise by lowering another property such as color or cut in order to get for a bigger diamond.

Several diamond sellers will offer an Ideal cut diamond cut grading, and these diamonds are almost always (as is the case here) perfect in terms of proportions and the general shape. An untrained eye won't see the color in this G color diamond, unless the stone is held up against a higher color grade diamond (for multistone rings this is important).

This diamond's pricetag of $620 puts it firmly in the cheapest group of stones which are considered for an engagement ring setting. If you're buying blind online, then VS1 clarity is really the lowestclarity rating you can go for without running a significant risk of getting a diamond with eye-visible defects.