10ct Trillion (16.67×16.67×6.67) vs 7.5ct Asscher (10.99×10.99×7.14)
Diamond size comparison
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10 ct Trillion (16.67×16.67×6.67mm) | 7.5 ct Asscher (10.99×10.99×7.14mm) |
Cutting style
Modified brilliant
Step cut
Weight
10 ct
7.5 ct
Measurements
16.67×16.67×6.67 mm
10.99×10.99×7.14 mm
L/W ratio
1
1
Face-up size
Adequate
Adequate
This diamond LOOKS its weight!
This diamond LOOKS 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 10ct Trillion (16.67×16.67×6.67mm) and 7.5ct Asscher (10.99×10.99×7.14mm) 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 10ct Trillion (16.67×16.67×6.67mm) and 7.5ct Asscher (10.99×10.99×7.14mm) 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.
Settings
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.
10ct Trillion (16.67×16.67×6.67mm) | |
7.5ct Asscher (10.99×10.99×7.14mm) | |
Difference: 61.17mm² (55%) |
10 carat Trillion (16.67×16.67×6.67mm) has approx. 55% more face-up area than 7.5 carat Asscher (10.99×10.99×7.14mm).
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).
10ct Trillion (16.67×16.67×6.67mm)
7.5ct Asscher (10.99×10.99×7.14mm)
Min. clarity
SI or better
VS or better
Min. color (platinum setting)
H+
H+
Min. color (yellow gold setting)
J+
I+
Depth percentage
32 - 48%
60 - 69%
Table percentage
50 - 70%
58 - 69%
Length-to-width ratio
1.00 - 1.10
1.00 - 1.05
Min. polish/symmetry
Good or better
Good or better
Additional Info
10ct Trillion (16.67×16.67×6.67mm)
7.5ct Asscher (10.99×10.99×7.14mm)
Face-up size
Normal for 10 carat Trillion
Normal for 7.5 carat Asscher
Facets
Between 31 - 50
usually 58
Length
16.67 mm
10.99 mm
Width
16.67 mm
10.99 mm
Depth
6.67 mm
7.14 mm
Gram weight
2 g (0.0705 ounces)
1.5 g (0.0529 ounces)
Points
1000 pts
750 pts
Volume
568.18 mm³
426.14 mm³
Compare diamonds
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Popular comparisons:
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- 10ct Trillion (16.67x16.67x6.67) vs. 1ct Round (6.5x6.5x3.92)
- 10ct Trillion (16.67x16.67x6.67) vs. 10ct Oval (17.49x11.66x7.11)
- 10ct Trillion (16.67x16.67x6.67) vs. 10ct Round (14x14x8.44)
- 10ct Trillion (16.67x16.67x6.67) vs. 10ct Heart (14.14x14.14x8.48)
- 10ct Trillion (16.67x16.67x6.67) vs. 5ct Pear (15.47x9.32x5.69)
- 10ct Trillion (16.67x16.67x6.67) vs. 10ct Emerald (14.39x10.66x6.93)
- 10ct Trillion (16.67x16.67x6.67) vs. 10ct Pear (19.18x11.91x7.26)
Depth percentage for 10 carat Trillion (16.67×16.67×6.67mm)
Depth percentage of Trillion cut is the ratio of the total depth (measured from table to culet)
to its width. The total depth percentage of this diamond
is 40%, which is OK.
(Recommended depth percentage for Trillions is between 32% and
48%)
Depth percentage for trillions is calculated with the following formula:
Depth percentage for trillions is calculated with the following formula:
Depth % = (total depth ÷ width) × 100
10 carat
Trillion
(16.67×16.67×6.67mm) depth %:
Total depth: 6.67 mm
Width = 16.67 mm
Width = 16.67 mm
Depth % = (6.67 ÷ 16.67 ) × 100 = 40%
Depth percentage for 7.5 carat Asscher (10.99×10.99×7.14mm)
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 percentage for asschers is calculated with the following formula:
Depth % = (total depth ÷ width) × 100
7.5 carat
Asscher
(10.99×10.99×7.14mm) depth %:
Total depth: 7.14 mm
Width = 10.99 mm
Width = 10.99 mm
Depth % = (7.14 ÷ 10.99 ) × 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 10 carat Trillion (16.67×16.67×6.67mm)
The face-up size of this 10 carat Trillion
(16.67×16.67×6.67mm) is within the normal range for
10ct diamonds of this shape.
Compared to 10ct
Trillion 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.
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 10 carat Trillion with less sparkle and the same face-up size as a well cut 9.5ct Trillion, which one would you choose?
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 10 carat Trillion with less sparkle and the same face-up size as a well cut 9.5ct Trillion, which one would you choose?
The bottom line:
A diamond must look its weight. This one does. Thumbs up.
10 carat Trillion reference diamond
Since there are no specific ideal proportions defined for Trillion cuts,
an estimation formula is used to calculate the Trillion reference diamond.
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Note: Trillion diamonds with face-up area of within 13% lower
and 16% higher than reference Trillion diamond area
are considered to be of adequate face-up size.
* Estimated Face-up area: Face-up area of Trillion cuts
is only an estimation (±9%). 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 7.5 carat Asscher (10.99×10.99×7.14mm)
The face-up size of this 7.5 carat Asscher
(10.99×10.99×7.14mm) is within the normal range for
7.5ct diamonds of this shape.
Compared to 7.5ct
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.
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 7.5 carat Asscher with less sparkle and the same face-up size as a well cut 7.1ct Asscher, which one would you choose?
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 7.5 carat Asscher with less sparkle and the same face-up size as a well cut 7.1ct Asscher, which one would you choose?
The bottom line:
A diamond must look its weight. This one does. Thumbs up.
7.5 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.
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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 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 10ct Trillion (16.67×16.67×6.67mm):
Top surface area = 172.29 mm²
Weight = 10ct
Face-up area per carat = 172.29 ÷ 10 = 17.23mm²/ct
Weight = 10ct
Face-up area per carat = 172.29 ÷ 10 = 17.23mm²/ct
Face-up area per carat
for 7.5ct Asscher (10.99×10.99×7.14mm):
Top surface area = 111.12 mm²
Weight = 7.5ct
Face-up area per carat = 111.12 ÷ 7.5 = 14.82mm²/ct
Weight = 7.5ct
Face-up area per carat = 111.12 ÷ 7.5 = 14.82mm²/ct
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