7.71ct Radiant (11.2×9.6×6.14) vs 7.05ct Radiant (10.17×10.17×6.51)
Diamond size comparison
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| 7.71 ct Radiant (11.2×9.6×6.14mm) | 7.05 ct Radiant (10.17×10.17×6.51mm) |
Cutting style
Mixed
Mixed
Weight
7.71 ct
7.05 ct
Measurements
11.2×9.6×6.14 mm
10.17×10.17×6.51 mm
L/W ratio
1.17
1
Face-up size
Inadequate
Inadequate
This diamond does NOT look its weight!
This diamond does NOT look its weight!
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 7.71ct Radiant (11.2×9.6×6.14mm) and 7.05ct Radiant (10.17×10.17×6.51mm) 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 7.71ct Radiant (11.2×9.6×6.14mm) and 7.05ct Radiant (10.17×10.17×6.51mm) 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.
Settings
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Ring:
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.
| 7.71ct Radiant (11.2×9.6×6.14mm) | |
| 7.05ct Radiant (10.17×10.17×6.51mm) | |
| Difference: 3.88mm² (4%) |
7.71 carat Radiant (11.2×9.6×6.14mm) has approx. 4% more face-up area than 7.05 carat Radiant (10.17×10.17×6.51mm).
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. Radiant cut diamonds, for example, are quite forgiving of inclusions which means you can go relatively low on the clarity scale (down to SI). No one will be able to tell the difference (except your wallet). 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. Radiant cut diamonds, for example, are quite forgiving of inclusions which means you can go relatively low on the clarity scale (down to SI). No one will be able to tell the difference (except your wallet). 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).
7.71ct Radiant (11.2×9.6×6.14mm)
7.05ct Radiant (10.17×10.17×6.51mm)
Min. clarity
SI or better
SI or better
Min. color (platinum setting)
H+
H+
Min. color (yellow gold setting)
J+
J+
Depth percentage
59 - 70%
59 - 70%
Table percentage
58 - 70%
58 - 70%
Length-to-width ratio
1.00 - 1.35
1.00 - 1.35
Min. polish/symmetry
Good or better
Good or better
Additional Info
7.71ct Radiant (11.2×9.6×6.14mm)
7.05ct Radiant (10.17×10.17×6.51mm)
Face-up size
Too small for 7.71 carat Radiant
Too small for 7.05 carat Radiant
Facets
usually between 62 - 70
usually between 62 - 70
Length
11.2 mm
10.17 mm
Width
9.6 mm
10.17 mm
Depth
6.14 mm
6.51 mm
Gram weight
1.54 g (0.0544 ounces)
1.41 g (0.0497 ounces)
Points
771 pts
705 pts
Volume
438.07 mm³
400.57 mm³
Compare diamonds
Choose diamonds to compare:
Popular comparisons:
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- 7.65ct Radiant (12.66x9.95x6.45) vs. 5ct Radiant (11.43x8.81x5.79)
- 7.65ct Radiant (12.66x9.95x6.45) vs. 5.33ct Oval (13.57x10.12x6.28)
- 7.65ct Radiant (12.66x9.95x6.45) vs. 6ct Radiant (11.66x9.49x6.55)
- 7.65ct Radiant (12.66x9.95x6.45) vs. 6ct Asscher (10.44x10.44x6.62)
- 7.68ct Radiant (13x10.3x6.6) vs. 7.68ct Radiant (11.4x11.4x7.3)
- 7.75ct Radiant (13.01x9.47x6.63) vs. 6.23ct Radiant (12.77x9.2x6.23)
- 7.75ct Radiant (11.43x11.43x7.32) vs. 10ct Radiant (12.45x12.45x7.97)
Depth percentage for 7.71 carat Radiant (11.2×9.6×6.14mm)
Depth percentage of Radiant 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 Radiants is between 59% and
70%)
Depth percentage for radiants is calculated with the following formula:
Depth percentage for radiants is calculated with the following formula:
Depth % = (total depth ÷ width) × 100
7.71 carat
Radiant
(11.2×9.6×6.14mm) depth %:
Total depth: 6.14 mm
Width = 9.6 mm
Width = 9.6 mm
Depth % = (6.14 ÷ 9.6 ) × 100 = 64%
Depth percentage for 7.05 carat Radiant (10.17×10.17×6.51mm)
Depth percentage of Radiant 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 Radiants is between 59% and
70%)
Depth percentage for radiants is calculated with the following formula:
Depth percentage for radiants is calculated with the following formula:
Depth % = (total depth ÷ width) × 100
7.05 carat
Radiant
(10.17×10.17×6.51mm) depth %:
Total depth: 6.51 mm
Width = 10.17 mm
Width = 10.17 mm
Depth % = (6.51 ÷ 10.17 ) × 100 = 64%
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 7.71 carat Radiant (11.2×9.6×6.14mm)
The face-up size of this 7.71 carat Radiant
(11.2×9.6×6.14mm) is out of normal range for
7.71ct diamonds of this shape. Compared to 7.71
carat Radiant 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.
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 7.71ct Radiant doesn't - from above, its size is comparable to a well cut 5.78ct Radiant.
7.71 carat Radiant reference diamond
Since there are no specific ideal proportions defined for Radiant cuts,
an estimation formula is used to calculate the Radiant reference diamond.
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Note: Radiant diamonds with face-up area of within 9% lower
and 12% higher than reference Radiant diamond area
are considered to be of adequate face-up size.
* Estimated Face-up area: Face-up area of Radiant 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 7.05 carat Radiant (10.17×10.17×6.51mm)
The face-up size of this 7.05 carat Radiant
(10.17×10.17×6.51mm) is out of normal range for
7.05ct diamonds of this shape. Compared to 7.05
carat Radiant 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.
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 7.05ct Radiant doesn't - from above, its size is comparable to a well cut 5.45ct Radiant.
7.05 carat Radiant reference diamond
Since there are no specific ideal proportions defined for Radiant cuts,
an estimation formula is used to calculate the Radiant reference diamond.
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Note: Radiant diamonds with face-up area of within 9% lower
and 12% higher than reference Radiant diamond area
are considered to be of adequate face-up size.
* Estimated Face-up area: Face-up area of Radiant 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 7.71ct Radiant (11.2×9.6×6.14mm):
Top surface area = 102.14 mm²
Weight = 7.71ct
Face-up area per carat = 102.14 ÷ 7.71 = 13.25mm²/ct
Weight = 7.71ct
Face-up area per carat = 102.14 ÷ 7.71 = 13.25mm²/ct
Face-up area per carat
for 7.05ct Radiant (10.17×10.17×6.51mm):
Top surface area = 98.26 mm²
Weight = 7.05ct
Face-up area per carat = 98.26 ÷ 7.05 = 13.94mm²/ct
Weight = 7.05ct
Face-up area per carat = 98.26 ÷ 7.05 = 13.94mm²/ct
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