3.2ct Heart (8.69×9.45×4.97) vs 3ct Round (8.67×8.75×6.14)
Diamond size comparison
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| 3.2 ct Heart (8.69×9.45×4.97mm) | 3 ct Round (8.67×8.75×6.14mm) |
Cutting style
Modified brilliant
Brilliant
Weight
3.2 ct
3 ct
Measurements
8.69×9.45×4.97 mm
8.67×8.75×6.14 mm
L/W ratio
1.09
1.01
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 3.2ct Heart (8.69×9.45×4.97mm) and 3ct Round (8.67×8.75×6.14mm) 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.
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 3.2ct Heart (8.69×9.45×4.97mm) and 3ct Round (8.67×8.75×6.14mm) 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.
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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.
| 3.2ct Heart (8.69×9.45×4.97mm) | |
| 3ct Round (8.67×8.75×6.14mm) | |
| Difference: 0.45mm² (0.8%) |
3 carat Round (8.67×8.75×6.14mm) has approx. 0.8% more face-up area than 3.2 carat Heart (8.69×9.45×4.97mm).
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).
3.2ct Heart (8.69×9.45×4.97mm)
3ct Round (8.67×8.75×6.14mm)
Min. clarity
SI or better
SI or better
Min. color (platinum setting)
H+
J+
Min. color (yellow gold setting)
J+
K+
Depth percentage
56 - 65%
58 - 62.5%
Table percentage
55 - 65%
53 - 58%
Length-to-width ratio
1.00 - 1.10
1.00 - 1.02
Min. polish/symmetry
Good or better
Good or better
Additional Info
3.2ct Heart (8.69×9.45×4.97mm)
3ct Round (8.67×8.75×6.14mm)
Face-up size
Too small for 3.2 carat Heart
Too small for 3 carat Round
Facets
usually 59
58 (57 if no culet)
Length
8.69 mm
8.67 mm
Width
9.45 mm
8.75 mm
Depth
4.97 mm
6.14 mm
Gram weight
0.64 g (0.0226 ounces)
0.6 g (0.0212 ounces)
Points
320 pts
300 pts
Volume
181.82 mm³
170.45 mm³
Compare diamonds
Choose diamonds to compare:
Popular comparisons:
- 3.2ct Heart (8.69x9.45x4.97) vs. 2.15ct Round (8.24x8.28x4.84)
- 3.15ct Heart (9.54x10.97x5.32) vs. 3.5ct Emerald (10.14x7.51x4.88)
- 3.15ct Heart (9.54x10.97x5.32) vs. 4.1ct Emerald (10x8.1x5.3)
- 3.15ct Heart (10.15x9.15x5.39) vs. 2.5ct Heart (8.49x9.49x5.39)
- 3.11ct Heart (9.07x10.17x5.81) vs. 1.95ct Heart (7.56x8.8x5)
- 3.27ct Heart (9.42x10.28x5.74) vs. 3.27ct Heart (10.28x9.42x5.74)
- 3.25ct Heart (9.72x9.72x5.83) vs. 1ct Marquise (10.38x5.19x3.17)
- 3.2ct Heart (8.69x9.45x5.21) vs. 1.55ct Round (7.52x7.52x4.53)
- 3.22ct Heart (9.24x10.1x5.54) vs. 1ct Princess (5.51x5.51x3.97)
Depth percentage for 3.2 carat Heart (8.69×9.45×4.97mm)
Depth percentage of Heart cut is the ratio of the total depth (measured from table to culet)
to its width. The total depth percentage of this diamond
is 52.6%, which is too shallow!.
(Recommended depth percentage for Hearts is between 56% and
65%)
Depth percentage for hearts is calculated with the following formula:
Depth percentage for hearts is calculated with the following formula:
Depth % = (total depth ÷ width) × 100
3.2 carat
Heart
(8.69×9.45×4.97mm) depth %:
Total depth: 4.97 mm
Width = 9.45 mm
Width = 9.45 mm
Depth % = (4.97 ÷ 9.45 ) × 100 = 52.6%
Depth percentage for 3 carat Round (8.67×8.75×6.14mm)
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 70.5%, which is too deep!.
(Recommended depth percentage for Rounds is between 58% and
62.5%)
Depth percentage for rounds is calculated with the following formula:
Depth percentage for rounds is calculated with the following formula:
Depth % = (total depth ÷ average diameter) × 100
3 carat
Round
(8.67×8.75×6.14mm) depth %:
Total depth: 6.14 mm
Average diameter = (8.67 + 8.75) ÷ 2 = 8.71 mm
Average diameter = (8.67 + 8.75) ÷ 2 = 8.71 mm
Depth % = (6.14 ÷ 8.71 ) × 100 = 70.5%
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 3.2 carat Heart (8.69×9.45×4.97mm)
The face-up size of this 3.2 carat Heart
(8.69×9.45×4.97mm) is out of normal range for
3.2ct diamonds of this shape. Compared to 3.2
carat Heart 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 3.2ct Heart doesn't - from above, its size is comparable to a well cut 2.63ct Heart.
3.2 carat Heart reference diamond
Since there are no specific ideal proportions defined for Heart cuts,
an estimation formula is used to calculate the Heart reference diamond.
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Note: Heart diamonds with face-up area of within 9% lower
and 12% higher than reference Heart diamond area
are considered to be of adequate face-up size.
* Estimated Face-up area: Face-up area of Heart 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 3 carat Round (8.67×8.75×6.14mm)
The face-up size of this 3 carat Round
(8.67×8.75×6.14mm) is out of normal range for
3ct diamonds of this shape. A well cut 3ct Round
should have an average diameter between 9.13 and 9.51 mm. Compared to 3
carat Round 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 one doesn't - sizewise, it looks like a well cut 2.41ct diamond.
3 carat Round reference diamond
3ct Round reference diamond is calculated from the following ideal proportions:
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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 3.2ct Heart (8.69×9.45×4.97mm):
Top surface area = 59.13 mm²
Weight = 3.2ct
Face-up area per carat = 59.13 ÷ 3.2 = 18.48mm²/ct
Weight = 3.2ct
Face-up area per carat = 59.13 ÷ 3.2 = 18.48mm²/ct
Face-up area per carat
for 3ct Round (8.67×8.75×6.14mm):
Top surface area = 59.58 mm²
Weight = 3ct
Face-up area per carat = 59.58 ÷ 3 = 19.86mm²/ct
Weight = 3ct
Face-up area per carat = 59.58 ÷ 3 = 19.86mm²/ct
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