5.28ct Cushion (9.65×9.23×6.4) vs 5.61ct Cushion (9.38×9.31×6.45)

Diamond size comparison

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Actual size of 5.28ct Cushion diamond
Actual size
sample image
vs.
Actual size of 5.61ct Cushion diamond
Actual size
sample image
5.28 ct Cushion (9.65×9.23×6.4mm) 5.61 ct Cushion (9.38×9.31×6.45mm)
Cutting style
(modified) brilliant
(modified) brilliant
Weight
5.28 ct
5.61 ct
Measurements
9.65×9.23×6.4 mm
9.38×9.31×6.45 mm
Total depth
69.3% OK
69.3% OK
L/W ratio
1.05
1.01
Face-up size
Inadequate
Inadequate
 
This diamond does NOT look its weight!
This diamond does NOT look its weight!
Actual diamond size
Actual diamond size
Before purchasing a diamond, one should make sure it looks its weight. It's important to understand that carat weight does not equal face-up size.

Two diamonds of exactly the same weight (and shape) can vary quite considerably in face-up size. This depends on the proportions of the cut (e.g., deep cuts will face up smaller).

Here you can see the actual sizes of 5.28ct Cushion (9.65×9.23×6.4mm) and 5.61ct Cushion (9.38×9.31×6.45mm) as they would appear on a ring and finger.

Adjust the ring and finger size to get an idea of how these stones would look on your finger.
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Ring: Skin tone:
Ring width: 3.0 mm
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Left finger image
Ring on a left finger
5.28ct Cushion on a left ring
64 mm
Right finger image
Ring on a right finger
5.61ct Cushion on a right ring
Your settings
Ring
Gold
Skin tone
Light
Ring diameter
16.9 mm
Ring width
3.0 mm
Finger length
64 mm
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Ring diameter: 16.9 mm
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5.28ct Cushion side view Side view of ring
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5.61ct Cushion side view Side view of ring
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Face-up area
80.16 mm²  (±5%)
78.6 mm²  (±5%)
Face-up area is a measure of the size of the diamond when viewed from the top (as set in a ring).

It tells you how big the diamond is at the girdle plane. It's important for a diamond to have sufficient face-up size for its carat weight.
Face-up size outline
Face-up size outline
5.28ct Cushion (9.65×9.23×6.4mm)
5.61ct Cushion (9.38×9.31×6.45mm)
Difference: 1.56mm² (2%)
5.28 carat Cushion (9.65×9.23×6.4mm) has approx. 2% more face-up area than 5.61 carat Cushion (9.38×9.31×6.45mm).
Face-up area per carat
15.18 mm²/ct
14.01 mm²/ct
To learn about the accuracy of these numbers, click here.


Quick Buying Guide

Diamond prices vary greatly as they depend on the combination of unique characteristics (4Cs - Cut, Color, Clarity, and Carat). For best value, it's important to choose the combination that will reduce the price without having a negative impact on appearance.

Each shape has its own recommended balance of qualities that will give you the most bang for your buck. Below is a quick buying guide to give you an idea, but for more detailed explanation, please see the complete buying guides for the respective diamonds (links below).
5.28ct Cushion (9.65×9.23×6.4mm)
5.61ct Cushion (9.38×9.31×6.45mm)
Price (best value)
Min. clarity
SI1 or better
SI1 or better
Min. color (platinum setting)
H+
H+
Min. color (yellow gold setting)
J+
J+
Depth percentage
59 - 70%
59 - 70%
Table percentage
56 - 70%
56 - 70%
Length-to-width ratio
1.00 - 1.35
1.00 - 1.35
Min. polish/symmetry
Good or better
Good or better
 Detailed buying guide

Additional Info

5.28ct Cushion (9.65×9.23×6.4mm)
5.61ct Cushion (9.38×9.31×6.45mm)
Face-up size
Too small for 5.28 carat Cushion
Too small for 5.61 carat Cushion
Facets
usually 58
usually 58
Length
9.65 mm
9.38 mm
Width
9.23 mm
9.31 mm
Depth
6.4 mm
6.45 mm
Gram weight
1.06 g (0.0372 ounces)
1.12 g (0.0396 ounces)
Points
528 pts
561 pts
Volume
300 mm³
318.75 mm³


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Depth percentage for 5.28 carat Cushion (9.65×9.23×6.4mm)

Depth percentage of Cushion cut is the ratio of the total depth (measured from table to culet) to its width. The total depth percentage of this diamond is 69.3%, which is OK. (Recommended depth percentage for Cushions is between 59% and 70%)

Depth percentage for cushions is calculated with the following formula:
Depth % = (total depth ÷ width) × 100

5.28 carat Cushion (9.65×9.23×6.4mm) depth %:
Total depth: 6.4 mm
Width = 9.23 mm
Depth % = (6.4 ÷ 9.23 ) × 100 = 69.3%

Depth percentage for 5.61 carat Cushion (9.38×9.31×6.45mm)

Depth percentage of Cushion cut is the ratio of the total depth (measured from table to culet) to its width. The total depth percentage of this diamond is 69.3%, which is OK. (Recommended depth percentage for Cushions is between 59% and 70%)

Depth percentage for cushions is calculated with the following formula:
Depth % = (total depth ÷ width) × 100

5.61 carat Cushion (9.38×9.31×6.45mm) depth %:
Total depth: 6.45 mm
Width = 9.31 mm
Depth % = (6.45 ÷ 9.31 ) × 100 = 69.3%

About Depth Percentage
Depth percentage is one of the most important measurements as it plays a critical role in diamond's appearance. If a diamond is cut too deep or too shallow, light leaks out, making the stone less brilliant and fiery. Deep cuts also add hidden weight.

Diamonds that fall out of recommended depth range are generally less desirable and usually best to be avoided.


Face-up size evaluation for 5.28 carat Cushion (9.65×9.23×6.4mm)

The face-up size of this 5.28 carat Cushion (9.65×9.23×6.4mm) is out of normal range for 5.28ct diamonds of this shape. Compared to 5.28 carat Cushion reference diamond, this diamond appears too small when viewed from the top, which makes it a chubby.

A chubby is a diamond with hidden extra weight that looks smaller than it should when viewed from the top. Hidden weight is typically a result of a poor cut usually linked to oversized girdle, deeper pavilion, and/or steeper crown.

In order to maximize profits, diamond cutters tend to retain as much weight from the rough as possible. This practice, however, can have detrimental effects on the stone's face-up size and its optical qualities. Poorly proportioned stones look duller and sparkle less than well cut stones. Chubby stones also look smaller.

The bottom line: One should never sacrifice beauty for weight. You probably don't want to pay for extra weight that doesn't add anything to the beauty. You want a stone that looks its weight. This 5.28ct Cushion doesn't - from above, its size is comparable to a well cut 4.25ct Cushion.

5.28 carat Cushion reference diamond
Since there are no specific ideal proportions defined for Cushion cuts, an estimation formula is used to calculate the Cushion reference diamond.
Parameters:
Weight: 5.28ct
Depth: 64%
L/W ratio: 1
 
Calculated values:
Length: 10.15 mm
Width: 10.15 mm
Depth: 6.5 mm
*Est. face-up area: 92.72 mm²
Note: Cushion diamonds with face-up area of within 9% lower and 12% higher than reference Cushion diamond area are considered to be of adequate face-up size.
* Estimated Face-up area: Face-up area of Cushion cuts is only an estimation (±5%). Due to uniqueness of each stone, it's impossible to accurately calculate face-up area given only a diamond's measurements.

Face-up size evaluation for 5.61 carat Cushion (9.38×9.31×6.45mm)

The face-up size of this 5.61 carat Cushion (9.38×9.31×6.45mm) is out of normal range for 5.61ct diamonds of this shape. Compared to 5.61 carat Cushion reference diamond, this diamond appears too small when viewed from the top, which makes it a chubby.

A chubby is a diamond with hidden extra weight that looks smaller than it should when viewed from the top. Hidden weight is typically a result of a poor cut usually linked to oversized girdle, deeper pavilion, and/or steeper crown.

In order to maximize profits, diamond cutters tend to retain as much weight from the rough as possible. This practice, however, can have detrimental effects on the stone's face-up size and its optical qualities. Poorly proportioned stones look duller and sparkle less than well cut stones. Chubby stones also look smaller.

The bottom line: One should never sacrifice beauty for weight. You probably don't want to pay for extra weight that doesn't add anything to the beauty. You want a stone that looks its weight. This 5.61ct Cushion doesn't - from above, its size is comparable to a well cut 4.13ct Cushion.

5.61 carat Cushion reference diamond
Since there are no specific ideal proportions defined for Cushion cuts, an estimation formula is used to calculate the Cushion reference diamond.
Parameters:
Weight: 5.61ct
Depth: 64%
L/W ratio: 1
 
Calculated values:
Length: 10.35 mm
Width: 10.35 mm
Depth: 6.62 mm
*Est. face-up area: 96.41 mm²
Note: Cushion diamonds with face-up area of within 9% lower and 12% higher than reference Cushion diamond area are considered to be of adequate face-up size.
* Estimated Face-up area: Face-up area of Cushion cuts is only an estimation (±5%). Due to uniqueness of each stone, it's impossible to accurately calculate face-up area given only a diamond's measurements.

Face-up Area per Carat

Face-up area per carat is calculated by dividing face-up area of the diamond with its carat weight. It tells you how many square millimeters of the top surface area a diamond is showing or would show for 1 carat weight. This can be useful when comparing stones of similar weights as it tells you how much spread per carat you will get.

Note: Face-up size does not linearly grow with carat weight, which means the heavier the stone, the smaller its face-up area per carat (e.g., 1ct stone will have higher face-up area per carat than 2ct stone).

Face-up area per carat for 5.28ct Cushion (9.65×9.23×6.4mm):
Top surface area = 80.16 mm²
Weight = 5.28ct

Face-up area per carat = 80.16 ÷ 5.28 = 15.18mm²/ct

Face-up area per carat for 5.61ct Cushion (9.38×9.31×6.45mm):
Top surface area = 78.6 mm²
Weight = 5.61ct

Face-up area per carat = 78.6 ÷ 5.61 = 14.01mm²/ct

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