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).
Princess Shape, 0.31 Carat Diamond Size on Hand
Size does not always mean a lot until you see it in context - this article uses a hand as "context" to simulate the apparent size of a 0.31 carat size diamond with a princess shape. A princess shape stone with a carat size of 0.31 is usually about 4.1 mm long on a side; this can of course vary depending on cut. If you've got a ring in your possession and you know the size, you can compare it to the US size 6 ring pictured - this will assist you in getting a better idea of the diamond size in the picture.
You'll become more knowledgeable looking at diamond sizes online such as this 0.31 carat weight princess shape diamond, but nothing beats seeing it in person. Fingers that are long and slender will change how a diamond appears as much as the diamond's carat weight - so look beyond just considering the 0.31 carat weight of this princess stone.
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Months after you've purchased the diamond, you might be pleasantly surprised by how much larger the diamond appears on the female hand, than when viewed by itself .
