5.8ct Emerald (13.18×9.04×5.39) vs 4ct Emerald (11×9×6)
Diamond size comparison
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| 5.8 ct Emerald (13.18×9.04×5.39mm) | 4 ct Emerald (11×9×6mm) |
Cutting style
Step cut
Step cut
Weight
5.8 ct
4 ct
Measurements
13.18×9.04×5.39 mm
11×9×6 mm
L/W ratio
1.46
1.22
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 5.8ct Emerald (13.18×9.04×5.39mm) and 4ct Emerald (11×9×6mm) 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 5.8ct Emerald (13.18×9.04×5.39mm) and 4ct Emerald (11×9×6mm) 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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Skin tone:
Ring width: 3.0 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.
| 5.8ct Emerald (13.18×9.04×5.39mm) | |
| 4ct Emerald (11×9×6mm) | |
| Difference: 19.14mm² (20%) |
5.8 carat Emerald (13.18×9.04×5.39mm) has approx. 20% more face-up area than 4 carat Emerald (11×9×6mm).
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. For Emeralds, best value recommendation is VS2 clarity (make sure it's eye-clean) and color H. 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. For Emeralds, best value recommendation is VS2 clarity (make sure it's eye-clean) and color H. 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).
5.8ct Emerald (13.18×9.04×5.39mm)
4ct Emerald (11×9×6mm)
Min. clarity
VS or better
VS or better
Min. color (platinum setting)
H+
H+
Min. color (yellow gold setting)
I+
I+
Depth percentage
60 - 69%
60 - 69%
Table percentage
58 - 69%
58 - 69%
Length-to-width ratio
1.25 - 1.65
1.25 - 1.65
Min. polish/symmetry
Good or better
Good or better
Additional Info
5.8ct Emerald (13.18×9.04×5.39mm)
4ct Emerald (11×9×6mm)
Face-up size
A bit large for 5.8 carat Emerald
Too large for 4 carat Emerald
Facets
usually 58
usually 58
Length
13.18 mm
11 mm
Width
9.04 mm
9 mm
Depth
5.39 mm
6 mm
Gram weight
1.16 g (0.0409 ounces)
0.8 g (0.0282 ounces)
Points
580 pts
400 pts
Volume
329.55 mm³
227.27 mm³
Compare diamonds
Choose diamonds to compare:
Popular comparisons:
- 5.8ct Emerald (13x9x5.39) vs. 4ct Emerald (11x9x6)
- 5.8ct Emerald (12x8.89x5.78) vs. 5ct Round (11.11x11.11x6.7)
- 5.75ct Emerald (10x10x3.7) vs. 0.85ct Oval (7.15x5.18x2.5)
- 5.73ct Emerald (11.56x9.49x6.08) vs. 6.38ct Emerald (11.30x9.9x6.66)
- 5.75ct Emerald (11.97x8.87x5.77) vs. 1ct Round (6.5x6.5x3.92)
- 5.84ct Emerald (11.87x8.61x5.21) vs. 7.09ct Emerald (12.55x9x6.1)
- 5.73ct Emerald (11.56x9.49x6.08) vs. 7.02ct Emerald (13.37x9.2x6.52)
- 5.81ct Emerald (12.12x8.85x5.75) vs. 4.26ct Heart (10.58x10.87x6.35)
- 5.81ct Emerald (12.12x8.85x5.75) vs. 6.74ct Round (12.05x12x7.5)
Depth percentage for 5.8 carat Emerald (13.18×9.04×5.39mm)
Depth percentage of Emerald cut is the ratio of the total depth (measured from table to culet)
to its width. The total depth percentage of this diamond
is 59.6%, which is too shallow!.
(Recommended depth percentage for Emeralds is between 60% and
69%)
Depth percentage for emeralds is calculated with the following formula:
Depth percentage for emeralds is calculated with the following formula:
Depth % = (total depth ÷ width) × 100
5.8 carat
Emerald
(13.18×9.04×5.39mm) depth %:
Total depth: 5.39 mm
Width = 9.04 mm
Width = 9.04 mm
Depth % = (5.39 ÷ 9.04 ) × 100 = 59.6%
Depth percentage for 4 carat Emerald (11×9×6mm)
Depth percentage of Emerald cut is the ratio of the total depth (measured from table to culet)
to its width. The total depth percentage of this diamond
is 66.7%, which is OK.
(Recommended depth percentage for Emeralds is between 60% and
69%)
Depth percentage for emeralds is calculated with the following formula:
Depth percentage for emeralds is calculated with the following formula:
Depth % = (total depth ÷ width) × 100
4 carat
Emerald
(11×9×6mm) depth %:
Total depth: 6 mm
Width = 9 mm
Width = 9 mm
Depth % = (6 ÷ 9 ) × 100 = 66.7%
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 5.8 carat Emerald (13.18×9.04×5.39mm)
The face-up size of this 5.8 carat Emerald
(13.18×9.04×5.39mm) is slightly out of normal range for
5.8ct diamonds of this shape. Compared to 5.8
carat Emerald 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 5.8 carat Emerald 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 5.8 carat Emerald 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.
5.8 carat Emerald reference diamond
Since there are no specific ideal proportions defined for Emerald cuts,
an estimation formula is used to calculate the Emerald reference diamond.
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Note: Emerald diamonds with face-up area of within 9% lower
and 12% higher than reference Emerald diamond area
are considered to be of adequate face-up size.
* Estimated Face-up area: Face-up area of Emerald cuts
is only an estimation (±4%). 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 4 carat Emerald (11×9×6mm)
The face-up size of this 4 carat Emerald
(11×9×6mm) is out of normal range for
4ct diamonds of this shape. Compared to 4
carat Emerald 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 4ct Emerald. 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 4ct Emerald. 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.
4 carat Emerald reference diamond
Since there are no specific ideal proportions defined for Emerald cuts,
an estimation formula is used to calculate the Emerald reference diamond.
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Note: Emerald diamonds with face-up area of within 9% lower
and 12% higher than reference Emerald diamond area
are considered to be of adequate face-up size.
* Estimated Face-up area: Face-up area of Emerald cuts
is only an estimation (±4%). 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 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 5.8ct Emerald (13.18×9.04×5.39mm):
Top surface area = 113.19 mm²
Weight = 5.8ct
Face-up area per carat = 113.19 ÷ 5.8 = 19.52mm²/ct
Weight = 5.8ct
Face-up area per carat = 113.19 ÷ 5.8 = 19.52mm²/ct
Face-up area per carat
for 4ct Emerald (11×9×6mm):
Top surface area = 94.05 mm²
Weight = 4ct
Face-up area per carat = 94.05 ÷ 4 = 23.51mm²/ct
Weight = 4ct
Face-up area per carat = 94.05 ÷ 4 = 23.51mm²/ct
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