10ct Cushion (13.75×13×8.32) vs 10ct Princess (13×13×8.64)
Diamond size comparison
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| 10 ct Cushion (13.75×13×8.32mm) | 10 ct Princess (13×13×8.64mm) |
Cutting style
(modified) brilliant
Modified brilliant
Weight
10 ct
10 ct
Measurements
13.75×13×8.32 mm
13×13×8.64 mm
L/W ratio
1.06
1
Face-up size
Borderline
Inadequate
This diamond is borderline SPREAD CUT!
This diamond is a SPREAD CUT!
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 10ct Cushion (13.75×13×8.32mm) and 10ct Princess (13×13×8.64mm) 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. To choose different diamonds or to change diamond parameters click here.
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 10ct Cushion (13.75×13×8.32mm) and 10ct Princess (13×13×8.64mm) 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. To choose different diamonds or to change diamond parameters click here.
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Ring width: 3.0 mm
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64 mm |
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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.
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.
| 10ct Cushion (13.75×13×8.32mm) | |
| 10ct Princess (13×13×8.64mm) | |
| Difference: 8.12mm² (5%) |
10 carat Princess (13×13×8.64mm) has approx. 5% more face-up area than 10 carat Cushion (13.75×13×8.32mm).
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).
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).
10ct Cushion (13.75×13×8.32mm)
10ct Princess (13×13×8.64mm)
Min. clarity
SI1 or better
VS2, SI1 or better
Min. color (platinum setting)
H+
I+
Min. color (yellow gold setting)
J+
J+
Depth percentage
59 - 70%
64 - 75%
Table percentage
56 - 70%
60 - 75%
Length-to-width ratio
1.00 - 1.35
1.00 - 1.05
Min. polish/symmetry
Good or better
Good or better
Additional Info
10ct Cushion (13.75×13×8.32mm)
10ct Princess (13×13×8.64mm)
Face-up size
A bit large for 10 carat Cushion
Too large for 10 carat Princess
Facets
usually 58
usually between 50 - 58
Length
13.75 mm
13 mm
Width
13 mm
13 mm
Depth
8.32 mm
8.64 mm
Gram weight
2 g (0.0705 ounces)
2 g (0.0705 ounces)
Points
1000 pts
1000 pts
Volume
568.18 mm³
568.18 mm³
Compare diamonds
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Popular comparisons:
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- 10ct Cushion (13.75x13x8.32) vs. 2ct Round (8.19x8.19x4.94)
- 10ct Cushion (13.75x13x8.32) vs. 3ct Emerald (9.64x7.14x4.64)
- 10ct Cushion (13.75x13x8.32) vs. 8ct Round (13x13x7.84)
- 10ct Cushion (13.75x13x8.32) vs. 2.5ct Round (8.82x8.82x5.32)
- 10ct Cushion (13.75x13x8.32) vs. 10ct Princess (12.2x12.2x8.78)
- 10ct Cushion (13.75x13x8.32) vs. 10ct Round (14.4x14.4x8.44)
- 10ct Cushion (13.75x13x8.32) vs. 2.4ct Round (8.7x8.7x5.25)
- 10ct Cushion (13.75x13x8.32) vs. 2.5ct Trillion (10.5x10.5x4.2)
- 10ct Cushion (13.75x13x8.32) vs. 10ct Cushion (13.46x12.22x7.82)
Depth percentage for 10 carat Cushion (13.75×13×8.32mm)
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 64%, which is OK.
(Recommended depth percentage for Cushions is between 59% and
70%)
Depth percentage for cushions is calculated with the following formula:
Depth percentage for cushions is calculated with the following formula:
Depth % = (total depth ÷ width) × 100
10 carat
Cushion
(13.75×13×8.32mm) depth %:
Total depth: 8.32 mm
Width = 13 mm
Width = 13 mm
Depth % = (8.32 ÷ 13 ) × 100 = 64%
Depth percentage for 10 carat Princess (13×13×8.64mm)
Depth percentage of Princess cut is the ratio of the total depth (measured from table to culet)
to its width. The total depth percentage of this diamond
is 66.5%, which is OK.
(Recommended depth percentage for Princesses is between 64% and
75%)
Depth percentage for princesses is calculated with the following formula:
Depth percentage for princesses is calculated with the following formula:
Depth % = (total depth ÷ width) × 100
10 carat
Princess
(13×13×8.64mm) depth %:
Total depth: 8.64 mm
Width = 13 mm
Width = 13 mm
Depth % = (8.64 ÷ 13 ) × 100 = 66.5%
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.
Diamonds that fall out of recommended depth range are generally less desirable and usually best to be avoided.
Face-up size evaluation for 10 carat Cushion (13.75×13×8.32mm)
The face-up size of this 10 carat Cushion
(13.75×13×8.32mm) is slightly out of normal range for
10ct diamonds of this shape. Compared to 10
carat Cushion reference diamond, this diamond seems a bit too large
when viewed from the top. This could be indicative of a spread cut, which is not a good sign.
A spread cut is a diamond that is cut to maximize spread. In this case, it would look larger than a well cut 10 carat Cushion when viewed from the top, however, this is usually not a good thing. Spread cuts are typically too shallow, which allows light to leak out of the stone instead of being properly returned back to the viewer's eye.
Spread cuts can look lifeless and flat, and can sometimes exhibit a fish-eye effect. They may also come with an extremely thin girdle which can easily chip.
A spread cut is a diamond that is cut to maximize spread. In this case, it would look larger than a well cut 10 carat Cushion when viewed from the top, however, this is usually not a good thing. Spread cuts are typically too shallow, which allows light to leak out of the stone instead of being properly returned back to the viewer's eye.
Spread cuts can look lifeless and flat, and can sometimes exhibit a fish-eye effect. They may also come with an extremely thin girdle which can easily chip.
The bottom line:
This diamond could be a spread cut. Caution is advised, since spread cuts
usually lack the sparkle and perfection that is expected of a beautiful diamond.
10 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.
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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.
To learn more about diamond size evaluation, click here.
Face-up size evaluation for 10 carat Princess (13×13×8.64mm)
The face-up size of this 10 carat Princess
(13×13×8.64mm) is out of normal range for
10ct diamonds of this shape. Compared to 10
carat Princess reference diamond, this diamond appears too big
when viewed from the top. You might think that's a good thing, however, it's not.
This is a so called spread cut.
A spread cut is a diamond that is cut to maximize spread instead of optimal light performance. If compared from above, it would look larger than a well cut 10ct Princess. This is not a good thing. Spread cuts are typically too shallow, which allows light to leak out of the stone resulting in less light being reflected back to the viewer's eye.
Spread cuts usually look lifeless and flat, and can sometimes exhibit a fish-eye effect. They may also come with an extremely thin girdle which can easily chip.
A spread cut is a diamond that is cut to maximize spread instead of optimal light performance. If compared from above, it would look larger than a well cut 10ct Princess. This is not a good thing. Spread cuts are typically too shallow, which allows light to leak out of the stone resulting in less light being reflected back to the viewer's eye.
Spread cuts usually look lifeless and flat, and can sometimes exhibit a fish-eye effect. They may also come with an extremely thin girdle which can easily chip.
The bottom line:
Spread cuts generally lack the brilliance and perfection that is
expected of a beautiful diamond. Don't be fooled into thinking that you're
getting a larger diamond for the money. This could be a rather flat, boring stone.
10 carat Princess reference diamond
Since there are no specific ideal proportions defined for Princess cuts,
an estimation formula is used to calculate the Princess reference diamond.
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Note: Princess diamonds with face-up area of within 8% lower
and 12% higher than reference Princess diamond area
are considered to be of adequate face-up size.
To learn more about diamond size evaluation, click here.
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 10ct Cushion (13.75×13×8.32mm):
Top surface area = 160.88 mm²
Weight = 10ct
Face-up area per carat = 160.88 ÷ 10 = 16.09mm²/ct
Weight = 10ct
Face-up area per carat = 160.88 ÷ 10 = 16.09mm²/ct
Face-up area per carat
for 10ct Princess (13×13×8.64mm):
Top surface area = 169 mm²
Weight = 10ct
Face-up area per carat = 169 ÷ 10 = 16.9mm²/ct
Weight = 10ct
Face-up area per carat = 169 ÷ 10 = 16.9mm²/ct
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