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0.31-Carat Round Diamond

$482
Summary
Stock number
LD02499390
Price per carat
$1,555
Carat weight
0.31
Shape
Round
Cut
Ideal
Color
I
Clarity
VS2
Length/width ratio
1.01
Depth %
60.7%
Table %
58.0%
Polish
Very Good
Symmetry
Very Good
Girdle
Thin to Medium
Culet
None
Fluorescence
Strong
Measurements
4.42 x 4.38 x 2.67 mm
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Sample Photo Diamond Diagram Sample Hearts & Arrows Photo Actual Photo - Approx. 10x
Diamond Grading Report

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About Your Blue Nile Diamond

Diamond Size: 0.31 Carat

The international unit of weight used for measuring diamonds and gemstones, 1 carat is equal to 200 milligrams, or 0.2 grams. A specific measurement of a diamond's weight, carat weight alone may not accurately represent a diamond's visual size. Learn More

We recommend considering carat weight along with two other influential characteristics: the overall dimensions and the cut grade of the diamond.

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.25 Ct. (4.1 mm)
.5 Ct. (5.1 mm)
.75 Ct. (5.8 mm)
1 Ct. (6.4 mm)
1.25 Ct. (6.9 mm)
1.5 Ct. (7.4 mm)
1.75 Ct. (7.8 mm)
2 Ct. + (8.1 mm)
17.9 mm  
.31Ct.
Diamond Selected
.31Ct.
Diamond Selected

Cut: Ideal

Ideal cut: Highest cut grade. Its proportions produce a beautiful balance of fire and sparkle in a diamond.

Want to learn even more about cut? Learn More

A cut grade is the measure of a diamond's light performance. Cut with proper proportions, light is returned out of the top of the diamond. If it is cut too shallow, light leaks out of the bottom; too deep and it escapes out of the side.

Diamond Cut

Color: I

I color: The last of the "near-colorless" grades, color may be only slightly detectable upon close examination. Exceptional value.

Want to learn even more about color? Learn More

  • For the purist, look for a colorless diamond with a grade of D-F for a diamond with no discernible color.
  • For an excellent value in a diamond with little or no noticeable color to the unaided eye, look for a near-colorless grade of G-I
Not Carried At Blue Nile
Blue Nile Diamonds
Z-N
M-K
J
I
H
G
F
E
D
Noticeable Color
Near-Colorless
Colorless

Clarity: VS2

VS1-VS2: Very slightly included. Minor inclusions ranging from difficult (VS1) to somewhat easy (VS2) to see at 10x magnification.

Want to learn even more about clarity? Learn More

  • Clarity refers to a diamond's relative absence of tiny, natural characteristics known as blemishes and inclusions.
  • Many of these characteristics are microscopic and do not affect a diamond's beauty in any discernible way.
Representative diamond under high magnification.

Diamond Price Guarantee

The Blue Nile Diamond Price Guarantee makes it easy to purchase diamonds with peace of mind. If you find a comparable GIA certified diamond at a lower price, call 888-565-7641. If the offer meets our qualifications, we'll match the price. There is no comparison when it comes to the value and quality of Blue Nile diamonds.

The following terms and conditions apply to our Diamond Price Guarantee program.

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Blue Nile Diamond Upgrade Program

  • All GIA and AGSL certified diamonds purchased from Blue Nile are eligible.
  • You will receive credit equal to 100% of the original price toward the purchase of a new diamond.
  • The price of your new diamond must be at least twice the price of your original diamond.
  • Your diamond must be in its original condition with the original diamond grading report.
  • Any damage to the original diamond may disqualify the diamond from the diamond upgrade program.

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0.31-Carat Round Diamond