5 Carat Oval (13.61×10×6mm) vs. 4.2 Carat Emerald (11×9×6.00mm)

Diamond comparison

Actual size is set for screen Change
Actual size of 5ct Oval diamond
Actual size
sample image
vs.
Actual size of 4.2ct Emerald diamond
Actual size
sample image
5 ct Oval (13.61×10×6mm) 4.2 ct Emerald (11×9×6.00mm)
Cutting style
Modified brilliant
Step cut
Weight
5 ct
4.2 ct
Measurements
13.61×10×6 mm
11×9×6.00 mm
Total depth
60% OK
66.7% OK
L/W ratio
1.36
1.22
Face-up size
Adequate
Borderline
 
This diamond LOOKS its weight!
This diamond is borderline SPREAD CUT!
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 5ct Oval (13.61×10×6mm) and 4.2ct Emerald (11×9×6.00mm) 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.

Compare prices and availability from recommended online vendors:


Settings
Ring: Skin tone:
Ring width: 3.0 mm
Saved...
Left finger image
Ring on a left finger
5ct Oval on a left ring
64 mm
Right finger image
Ring on a right finger
4.2ct Emerald 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
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
5ct Oval side view Side view of ring
vs
4.2ct Emerald side view Side view of ring
Actual size is set for screen Change
Face-up area
111.6 mm²  (±5%)
94.05 mm²  (±4%)
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
5ct Oval (13.61×10×6mm)
4.2ct Emerald (11×9×6.00mm)
Difference: 17.55mm² (19%)
5 carat Oval (13.61×10×6mm) has approx. 19% more top surface area than 4.2 carat Emerald (11×9×6.00mm).
Face-up area per carat
22.32 mm²/ct
22.39 mm²/ct
To learn about the accuracy of these numbers, click here.

Quick Buying Guide

5ct Oval (13.61×10×6mm)
4.2ct Emerald (11×9×6.00mm)
Min. clarity
SI or better
VS or better
Min. color (platinum solitaire)
I+
H+
Depth percentage
59 - 65%
60 - 69%
Table percentage
53 - 62%
58 - 69%
Length-to-width ratio
1.25 - 1.65
1.25 - 1.65
Min. polish/symmetry
Good or better
Good or better
 Detailed buying guide

Additional Info

5ct Oval (13.61×10×6mm)
4.2ct Emerald (11×9×6.00mm)
Face-up size
Normal for 5 carat Oval
A bit large for 4.2 carat Emerald
Facets
usually 58
usually 58
Length
13.61 mm
11 mm
Width
10 mm
9 mm
Depth
6 mm
6.00 mm
Gram weight
1 g (0.0353 ounces)
0.84 g (0.0296 ounces)
Points
500 pts
420 pts
Volume
284.09 mm³
238.64 mm³


Compare diamonds

Choose diamonds to compare:
 
× ×
carat vs. length* width* depth*
× ×
 
* Optional

More comparisons:

Depth percentage for 5 carat Oval (13.61×10×6mm)

Depth percentage of Oval cut is the ratio of the total depth (measured from table to culet) to its width. The total depth percentage of this diamond is 60%, which is OK. (Recommended depth percentage for Ovals is between 59% and 65%)

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

5 carat Oval (13.61×10×6mm) depth %:
Total depth: 6 mm
Width = 10 mm
Depth % = (6 ÷ 10 ) × 100 = 60%

Depth percentage for 4.2 carat Emerald (11×9×6.00mm)

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 % = (total depth ÷ width) × 100

4.2 carat Emerald (11×9×6.00mm) depth %:
Total depth: 6.00 mm
Width = 9 mm
Depth % = (6.00 ÷ 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.


Face-up size evaluation for 5 carat Oval (13.61×10×6mm)

The face-up size of this 5 carat Oval (13.61×10×6mm) is within the normal range for 5ct diamonds of this shape. Compared to 5ct Oval reference diamond (see below), this diamond is of adequate size when viewed from the top.

Diamonds are sold by weight (carats), but it's important to understand that weight doesn't equally translate into physical size, especially spread. Two diamonds of the same carat weight can vary greatly in spread, meaning that one diamond can appear larger than the other, even though they weight exactly the same.

Proper face-up size should play an important role when buying a diamond. When a diamond is set in a ring, your eyes will only see the face-up area, so you should make sure it's of adequate size. You probably don't want a 5 carat Oval that looks like a poorly cut 4.5ct.

The bottom line: A diamond must look its weight. This one does.

5 carat Oval reference diamond

Since there are no specific ideal proportions defined for Oval cuts, an estimation formula is used to calculate the Oval reference diamond.
Parameters:
Weight: 5ct
Depth: 61%
L/W ratio: 1.5
 
Calculated values:
Length: 14 mm
Width: 9.33 mm
Depth: 5.69 mm
*Est. face-up area: 107.11 mm²
Note: Oval diamonds with face-up area of within 9% lower and 12% higher than reference Oval diamond area are considered to be of adequate face-up size.
* Estimated Face-up area: Face-up area of Oval 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 4.2 carat Emerald (11×9×6.00mm)

The face-up size of this 4.2 carat Emerald (11×9×6.00mm) is slightly out of normal range for 4.2ct diamonds of this shape. Compared to 4.2 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. It looks larger than a well-cut 4.2ct 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.

4.2 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.
Parameters:
Weight: 4.2ct
Depth: 65%
L/W ratio: 1.35
 
Calculated values:
Length: 10.88 mm
Width: 8.06 mm
Depth: 5.24 mm
*Est. face-up area: 83.31 mm²
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 5ct Oval (13.61×10×6mm):
Top surface area = 111.6 mm²
Weight = 5ct

Face-up area per carat = 111.6 ÷ 5 = 22.32mm²/ct

Face-up area per carat for 4.2ct Emerald (11×9×6.00mm):
Top surface area = 94.05 mm²
Weight = 4.2ct

Face-up area per carat = 94.05 ÷ 4.2 = 22.39mm²/ct

Enter your screen size (diagonal)

My screen size is  inches



Actual size is currently adjusted to screen.

If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a diamond, ring and finger will not be shown correctly.