7ct Asscher (10.74×10.74×6.98) vs 5ct Round (11.11×11.11×6.7)

Diamond size comparison

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Actual size of 7ct Asscher diamond
Actual size
sample image
vs.
Actual size of 5ct Round diamond
Actual size
sample image
7 ct Asscher (10.74×10.74×6.98mm) 5 ct Round (11.11×11.11×6.7mm)
Cutting style
Step cut
Brilliant
Weight
7 ct
5 ct
Measurements
10.74×10.74×6.98 mm
11.11×11.11×6.7 mm
Total depth
65% OK
60.3% OK
L/W ratio
1
1
Face-up size
Adequate
Adequate
 
This diamond LOOKS its weight!
This diamond LOOKS 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 7ct Asscher (10.74×10.74×6.98mm) and 5ct Round (11.11×11.11×6.7mm) 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.
Settings
Ring: Skin tone:
Ring width: 3.0 mm
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Left finger image
Ring on a left finger
7ct Asscher on a left ring
64 mm
Right finger image
Ring on a right finger
5ct Round 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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7ct Asscher side view Side view of ring
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5ct Round side view Side view of ring
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Face-up area
106.12 mm²  (±5%)
96.94 mm² 
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
7ct Asscher (10.74×10.74×6.98mm)
5ct Round (11.11×11.11×6.7mm)
Difference: 9.18mm² (9%)
7 carat Asscher (10.74×10.74×6.98mm) has approx. 9% more face-up area than 5 carat Round (11.11×11.11×6.7mm).
Face-up area per carat
15.16 mm²/ct
19.39 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).
7ct Asscher (10.74×10.74×6.98mm)
5ct Round (11.11×11.11×6.7mm)
Price (best value)
Min. clarity
VS or better
SI or better
Min. color (platinum setting)
H+
J+
Min. color (yellow gold setting)
I+
K+
Depth percentage
60 - 69%
58 - 62.5%
Table percentage
58 - 69%
53 - 58%
Length-to-width ratio
1.00 - 1.05
1.00 - 1.02
Min. polish/symmetry
Good or better
Good or better
 Detailed buying guide

Additional Info

7ct Asscher (10.74×10.74×6.98mm)
5ct Round (11.11×11.11×6.7mm)
Face-up size
Normal for 7 carat Asscher
Normal for 5 carat Round
Facets
usually 58
58 (57 if no culet)
Length
10.74 mm
11.11 mm
Width
10.74 mm
11.11 mm
Depth
6.98 mm
6.7 mm
Gram weight
1.4 g (0.0494 ounces)
1 g (0.0353 ounces)
Points
700 pts
500 pts
Volume
397.73 mm³
284.09 mm³


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Depth percentage for 7 carat Asscher (10.74×10.74×6.98mm)

Depth percentage of Asscher cut is the ratio of the total depth (measured from table to culet) to its width. The total depth percentage of this diamond is 65%, which is OK. (Recommended depth percentage for Asschers is between 60% and 69%)

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

7 carat Asscher (10.74×10.74×6.98mm) depth %:
Total depth: 6.98 mm
Width = 10.74 mm
Depth % = (6.98 ÷ 10.74 ) × 100 = 65%

Depth percentage for 5 carat Round (11.11×11.11×6.7mm)

Depth percentage of Round cut is the ratio of the total depth (measured from table to culet) to its average diameter. The total depth percentage of this diamond is 60.3%, which is OK. (Recommended depth percentage for Rounds is between 58% and 62.5%)

Depth percentage for rounds is calculated with the following formula:
Depth % = (total depth ÷ average diameter) × 100

5 carat Round (11.11×11.11×6.7mm) depth %:
Total depth: 6.7 mm
Average diameter = (11.11 + 11.11) ÷ 2 = 11.11 mm
Depth % = (6.7 ÷ 11.11 ) × 100 = 60.3%

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 7 carat Asscher (10.74×10.74×6.98mm)

The face-up size of this 7 carat Asscher (10.74×10.74×6.98mm) is within the normal range for 7ct diamonds of this shape. Compared to 7ct Asscher reference diamond (see below), this diamond is of adequate size when viewed from the top. In short, all is OK, this diamond looks its weight.

The importance of face-up size
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. Adequate size also indicates a good cut, meaning better light performance. For example, if given a choice between a poorly cut 7 carat Asscher with less sparkle and the same face-up size as a well cut 6.7ct Asscher, which one would you choose?

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

7 carat Asscher reference diamond
Since there are no specific ideal proportions defined for Asscher cuts, an estimation formula is used to calculate the Asscher reference diamond.
Parameters:
Weight: 7ct
Depth: 65%
L/W ratio: 1
 
Calculated values:
Length: 10.74 mm
Width: 10.74 mm
Depth: 6.98 mm
*Est. face-up area: 106.12 mm²
Note: Asscher diamonds with face-up area of within 9% lower and 12% higher than reference Asscher diamond area are considered to be of adequate face-up size.
* Estimated Face-up area: Face-up area of Asscher 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 carat Round (11.11×11.11×6.7mm)

The face-up size of this 5 carat Round (11.11×11.11×6.7mm) is within the normal range for 5ct diamonds of this shape. Compared to 5ct Round reference diamond (see below), this diamond is of adequate size when viewed from the top. In short, all is OK, this diamond looks its weight.

The importance of face-up size
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. Adequate size also indicates a good cut, meaning better light performance. Would you want a poorly cut 5 carat diamond that is less sparkly and has the same face-up size as an ideal cut 4.8 carat? Probably not.

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

5 carat Round reference diamond
5ct Round reference diamond is calculated from the following ideal proportions:
Proportions:
Table: 57%
Crown angle: 34°
Pavilion angle: 40.7°
Girdle: 2.8%
Star length: 50%
Lower half-length: 80%
Culet: None
 
Calculated values:
Depth: 60.3%
Crown height: 14.5%
Pavilion height: 43%
For 5 carat weight:
Diameter: 11.11 mm
Face-up area: 96.94 mm²
Note: Round diamonds with face-up area of within 5% lower and 3% higher than reference Round diamond area are considered to be of adequate face-up size.

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 7ct Asscher (10.74×10.74×6.98mm):
Top surface area = 106.12 mm²
Weight = 7ct

Face-up area per carat = 106.12 ÷ 7 = 15.16mm²/ct

Face-up area per carat for 5ct Round (11.11×11.11×6.7mm):
Top surface area = 96.94 mm²
Weight = 5ct

Face-up area per carat = 96.94 ÷ 5 = 19.39mm²/ct

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