1.21 Carat Oval (7.92×5.74×3.67mm) vs. 1.1 Carat Oval (8.49×5.98×3.48mm)
Diamond comparison
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| 1.21 ct Oval (7.92×5.74×3.67mm) | 1.1 ct Oval (8.49×5.98×3.48mm) |
Cutting style
Modified brilliant
Modified brilliant
Weight
1.21 ct
1.1 ct
Measurements
7.92×5.74×3.67 mm
8.49×5.98×3.48 mm
L/W ratio
1.38
1.42
Face-up size
Borderline
Adequate
This diamond BARELY 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 1.21ct Oval (7.92×5.74×3.67mm) and 1.1ct Oval (8.49×5.98×3.48mm) 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.
Compare prices and availability from recommended online vendors:
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 1.21ct Oval (7.92×5.74×3.67mm) and 1.1ct Oval (8.49×5.98×3.48mm) 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.
Compare prices and availability from recommended online vendors:
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.
| 1.21ct Oval (7.92×5.74×3.67mm) | |
| 1.1ct Oval (8.49×5.98×3.48mm) | |
| Difference: 4.35mm² (12%) |
1.1 carat Oval (8.49×5.98×3.48mm) has approx. 12% more top surface area than 1.21 carat Oval (7.92×5.74×3.67mm).
To learn about the accuracy of these numbers, click here.
Quick Buying Guide
1.21ct Oval (7.92×5.74×3.67mm)
1.1ct Oval (8.49×5.98×3.48mm)
Min. clarity
SI or better
SI or better
Min. color (platinum solitaire)
I+
I+
Depth percentage
59 - 65%
59 - 65%
Table percentage
53 - 62%
53 - 62%
Length-to-width ratio
1.25 - 1.65
1.25 - 1.65
Min. polish/symmetry
Good or better
Good or better
Additional Info
1.21ct Oval (7.92×5.74×3.67mm)
1.1ct Oval (8.49×5.98×3.48mm)
Face-up size
A bit small for 1.21 carat Oval
Normal for 1.1 carat Oval
Facets
usually 58
usually 58
Length
7.92 mm
8.49 mm
Width
5.74 mm
5.98 mm
Depth
3.67 mm
3.48 mm
Gram weight
0.24 g (0.0085 ounces)
0.22 g (0.0078 ounces)
Points
121 pts
110 pts
Volume
68.75 mm³
62.5 mm³
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- 1.2ct Oval (8.63x5.75x3.51) vs. 1.01ct Oval (8.06x5.62x3.45)
- 1.2ct Oval (8.12x6.02x3.69) vs. 1.2ct Oval (8.27x6.04x3.55)
- 1.21ct Oval (8.49x6.22x3.69) vs. 1.5ct Cushion (6.68x6.12x4.15)
- 1.25ct Oval (8.75x5.83x3.56) vs. 1.5ct Oval (9.29x6.19x3.78)
- 1.13ct Oval (8.26x6.11x3.7) vs. 0.53ct Marquise (7.73x4.22x2.6)
- 1.26ct Oval (8.27x5.85x3.62) vs. 1.23ct Oval (8.13x5.64x3.49)
- 1.2ct Oval (8.55x5.87x3.62) vs. 0.93ct Oval (8.44x5.25x3.10)
- 1.21ct Oval (8.49x6.22x3.69) vs. 1.2ct Round (6.75x6.76x3.7)
Depth percentage for 1.21 carat Oval (7.92×5.74×3.67mm)
Depth percentage of Oval cut is the ratio of the total depth (measured from table to culet)
to its width. The total depth percentage of this diamond
is 63.9%, which is OK.
(Recommended depth percentage for Ovals is between 59% and
65%)
Depth percentage for ovals is calculated with the following formula:
Depth percentage for ovals is calculated with the following formula:
Depth % = (total depth ÷ width) × 100
1.21 carat
Oval
(7.92×5.74×3.67mm) depth %:
Total depth: 3.67 mm
Width = 5.74 mm
Width = 5.74 mm
Depth % = (3.67 ÷ 5.74 ) × 100 = 63.9%
Depth percentage for 1.1 carat Oval (8.49×5.98×3.48mm)
Depth percentage of Oval cut is the ratio of the total depth (measured from table to culet)
to its width. The total depth percentage of this diamond
is 58.2%, which is too shallow!.
(Recommended depth percentage for Ovals is between 59% and
65%)
Depth percentage for ovals is calculated with the following formula:
Depth percentage for ovals is calculated with the following formula:
Depth % = (total depth ÷ width) × 100
1.1 carat
Oval
(8.49×5.98×3.48mm) depth %:
Total depth: 3.48 mm
Width = 5.98 mm
Width = 5.98 mm
Depth % = (3.48 ÷ 5.98 ) × 100 = 58.2%
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 1.21 carat Oval (7.92×5.74×3.67mm)
The face-up size of this 1.21 carat Oval
(7.92×5.74×3.67mm) is slightly out of normal range for
1.21ct diamonds of this shape. Compared to 1.21
carat Oval 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. This 1.21ct Oval
looks like a well cut
1.03ct.
1.21 carat Oval reference diamond
Since there are no specific ideal proportions defined for Oval cuts,
an estimation formula is used to calculate the Oval reference diamond.
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Note: Oval diamonds with face-up area of within 9% lower
and 12% higher than reference Oval diamond area
are considered to be of adequate face-up size.
* Estimated Face-up area: Face-up area of Oval 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.
To learn more about diamond size evaluation, click here.
Face-up size evaluation for 1.1 carat Oval (8.49×5.98×3.48mm)
The face-up size of this 1.1 carat Oval
(8.49×5.98×3.48mm) is within the normal range for
1.1ct diamonds of this shape.
Compared to 1.1ct
Oval reference diamond (see below), this diamond is of adequate
size when viewed from the top.
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. You probably don't want a 1.1 carat Oval that looks like a poorly cut 0.99ct.
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. You probably don't want a 1.1 carat Oval that looks like a poorly cut 0.99ct.
The bottom line:
A diamond must look its weight. This one does.
1.1 carat Oval reference diamond
Since there are no specific ideal proportions defined for Oval cuts,
an estimation formula is used to calculate the Oval reference diamond.
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Note: Oval diamonds with face-up area of within 9% lower
and 12% higher than reference Oval diamond area
are considered to be of adequate face-up size.
* Estimated Face-up area: Face-up area of Oval 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.
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 1.21ct Oval (7.92×5.74×3.67mm):
Top surface area = 37.28 mm²
Weight = 1.21ct
Face-up area per carat = 37.28 ÷ 1.21 = 30.81mm²/ct
Weight = 1.21ct
Face-up area per carat = 37.28 ÷ 1.21 = 30.81mm²/ct
Face-up area per carat
for 1.1ct Oval (8.49×5.98×3.48mm):
Top surface area = 41.63 mm²
Weight = 1.1ct
Face-up area per carat = 41.63 ÷ 1.1 = 37.85mm²/ct
Weight = 1.1ct
Face-up area per carat = 41.63 ÷ 1.1 = 37.85mm²/ct
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