2ct Pear (10×7×4.27 mm) vs 2ct Emerald (9×7×4.55 mm)
Diamond Size Comparison
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| 2 ct Pear (10×7×4.27mm) | 2 ct Emerald (9×7×4.55mm) |
Cutting style
Modified brilliant
Step cut
Weight
2 ct
2 ct
Measurements
10×7×4.27 mm
9×7×4.55 mm
L/W ratio
1.43
1.29
Face-up size
Borderline
Inadequate
This diamond BARELY looks its weight!
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 2ct Pear (10×7×4.27mm) and 2ct Emerald (9×7×4.55mm) 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 2ct Pear (10×7×4.27mm) and 2ct Emerald (9×7×4.55mm) 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.
| 2ct Pear (10×7×4.27mm) | |
| 2ct Emerald (9×7×4.55mm) | |
| Difference: 8.75mm² (17%) |
2 carat Emerald (9×7×4.55mm) has approx. 17% more face-up area than 2 carat Pear (10×7×4.27mm).
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).
2ct Pear (10×7×4.27mm)
2ct Emerald (9×7×4.55mm)
Min. clarity
SI or better
VS or better
Min. color (platinum setting)
H+
H+
Min. color (yellow gold setting)
J+
I+
Depth percentage
59 - 65%
60 - 69%
Table percentage
50 - 65%
58 - 69%
Length-to-width ratio
1.45 - 1.75
1.25 - 1.65
Min. polish/symmetry
Good or better
Good or better
Additional Info
2ct Pear (10×7×4.27mm)
2ct Emerald (9×7×4.55mm)
Face-up size
A bit small for 2 carat Pear
Too large for 2 carat Emerald
Facets
usually 58
usually 58
Length
10 mm
9 mm
Width
7 mm
7 mm
Depth
4.27 mm
4.55 mm
Gram weight
0.4 g (0.0141 ounces)
0.4 g (0.0141 ounces)
Points
200 pts
200 pts
Volume
113.64 mm³
113.64 mm³
Compare diamonds
Choose diamonds to compare:
Popular comparisons:
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- 2ct Pear (10x7x4.27) vs. 1.5ct Pear (9x6x2)
- 2ct Pear (10x7x4.27) vs. 4.75ct Emerald (11x9x5.85)
- 2ct Pear (10x7x4.27) vs. 1ct Round (6.5x6.5x3.92)
- 2ct Pear (10x7x4.27) vs. 2ct Radiant (8.5x6.5x4.16)
- 2ct Pear (10x7x4.27) vs. 3.25ct Cushion (10x8x5.12)
- 2ct Pear (10x7x4.27) vs. 2ct Pear (10.5x7x4.27)
Depth percentage for 2 carat Pear (10×7×4.27mm)
Depth percentage of Pear cut is the ratio of the total depth (measured from table to culet)
to its width. The total depth percentage of this diamond
is 61%, which is OK.
(Recommended depth percentage for Pears is between 59% and
65%)
Depth percentage for pears is calculated with the following formula:
Depth percentage for pears is calculated with the following formula:
Depth % = (total depth ÷ width) × 100
2 carat
Pear
(10×7×4.27mm) depth %:
Total depth: 4.27 mm
Width = 7 mm
Width = 7 mm
Depth % = (4.27 ÷ 7 ) × 100 = 61%
Depth percentage for 2 carat Emerald (9×7×4.55mm)
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 65%, 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
2 carat
Emerald
(9×7×4.55mm) depth %:
Total depth: 4.55 mm
Width = 7 mm
Width = 7 mm
Depth % = (4.55 ÷ 7 ) × 100 = 65%
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 2 carat Pear (10×7×4.27mm)
The face-up size of this 2 carat Pear
(10×7×4.27mm) is slightly out of normal range for
2ct diamonds of this shape. Compared to 2
carat Pear reference diamond,
this diamond appears a bit too small when viewed from the top, which means it's
probably a borderline 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. Sizewise, this 2ct Pear looks like a well cut 1.68ct Pear.
2 carat Pear reference diamond
Since there are no specific ideal proportions defined for Pear cuts,
an estimation formula is used to calculate the Pear reference diamond.
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Note: Pear diamonds with face-up area of within 9% lower
and 12% higher than reference Pear diamond area
are considered to be of adequate face-up size.
* Estimated Face-up area: Face-up area of Pear 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.
Face-up size evaluation for 2 carat Emerald (9×7×4.55mm)
The face-up size of this 2 carat Emerald
(9×7×4.55mm) is out of normal range for
2ct diamonds of this shape. Compared to 2
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 2ct 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 2ct 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.
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.
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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.
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 2ct Pear (10×7×4.27mm):
Top surface area = 51.1 mm²
Weight = 2ct
Face-up area per carat = 51.1 ÷ 2 = 25.55mm²/ct
Weight = 2ct
Face-up area per carat = 51.1 ÷ 2 = 25.55mm²/ct
Face-up area per carat
for 2ct Emerald (9×7×4.55mm):
Top surface area = 59.85 mm²
Weight = 2ct
Face-up area per carat = 59.85 ÷ 2 = 29.93mm²/ct
Weight = 2ct
Face-up area per carat = 59.85 ÷ 2 = 29.93mm²/ct
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