0.62 Carat Marquise (8.00×4.30×3.00mm) vs. 0.55 Carat Marquise (7.70×4.28×2.90mm)

Diamond comparison

Actual size is set for screen Change
Actual size of 0.62ct Marquise diamond
Actual size
sample image
vs.
Actual size of 0.55ct Marquise diamond
Actual size
sample image
0.62 ct Marquise (8.00×4.30×3.00mm) 0.55 ct Marquise (7.70×4.28×2.90mm)
Cutting style
Modified brilliant
Modified brilliant
Weight
0.62 ct
0.55 ct
Measurements
8.00×4.30×3.00 mm
7.70×4.28×2.90 mm
Total depth
69.8% too deep!
67.8% too deep!
L/W ratio
1.86
1.8
Face-up size
Inadequate
Borderline
 
This diamond does NOT look its weight!
This diamond BARELY looks its weight!
Actual diamond size
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 0.62ct Marquise (8.00×4.30×3.00mm) and 0.55ct Marquise (7.70×4.28×2.90mm) 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
Ring: Skin tone:
Ring width: 3.0 mm
Saved...
Left finger image
Ring on a left finger
0.62ct Marquise on a left ring
64 mm
Right finger image
Ring on a right finger
0.55ct Marquise on a right ring
Your settings
Ring
Gold
Skin tone
Light
Ring diameter
16.9 mm
Ring width
3.0 mm
Finger length
64 mm
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
0.62ct Marquise side view Side view of ring
vs
0.55ct Marquise side view Side view of ring
Actual size is set for screen Change
Face-up area
24.42 mm²  (±4%)
23.4 mm²  (±4%)
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.
Face-up size outline
Face-up size outline
0.62ct Marquise (8.00×4.30×3.00mm)
0.55ct Marquise (7.70×4.28×2.90mm)
Difference: 1.02mm² (4%)
0.62 carat Marquise (8.00×4.30×3.00mm) has approx. 4% more top surface area than 0.55 carat Marquise (7.70×4.28×2.90mm).
Face-up area per carat
39.39 mm²/ct
42.55 mm²/ct
To learn about the accuracy of these numbers, click here.

Quick Buying Guide

0.62ct Marquise (8.00×4.30×3.00mm)
0.55ct Marquise (7.70×4.28×2.90mm)
Min. clarity
SI or better
SI or better
Min. color (platinum solitaire)
H+
H+
Depth percentage
59 - 65%
59 - 65%
Table percentage
53 - 65%
53 - 65%
Length-to-width ratio
1.60 - 2.25
1.60 - 2.25
Min. polish/symmetry
Good or better
Good or better
 Detailed buying guide

Additional Info

0.62ct Marquise (8.00×4.30×3.00mm)
0.55ct Marquise (7.70×4.28×2.90mm)
Face-up size
Too small for 0.62 carat Marquise
A bit small for 0.55 carat Marquise
Facets
usually 58
usually 58
Length
8.00 mm
7.70 mm
Width
4.30 mm
4.28 mm
Depth
3.00 mm
2.90 mm
Gram weight
0.12 g (0.0044 ounces)
0.11 g (0.0039 ounces)
Points
62 pts
55 pts
Volume
35.23 mm³
31.25 mm³


Compare diamonds

Choose diamonds to compare:
 
× ×
carat vs. length* width* depth*
× ×
 
* Optional

More comparisons:

Depth percentage for 0.62 carat Marquise (8.00×4.30×3.00mm)

Depth percentage of Marquise cut is the ratio of the total depth (measured from table to culet) to its width. The total depth percentage of this diamond is 69.8%, which is too deep!. (Recommended depth percentage for Marquises is between 59% and 65%)

Depth percentage for marquises is calculated with the following formula:
Depth % = (total depth ÷ width) × 100

0.62 carat Marquise (8.00×4.30×3.00mm) depth %:
Total depth: 3.00 mm
Width = 4.30 mm
Depth % = (3.00 ÷ 4.30 ) × 100 = 69.8%

Depth percentage for 0.55 carat Marquise (7.70×4.28×2.90mm)

Depth percentage of Marquise cut is the ratio of the total depth (measured from table to culet) to its width. The total depth percentage of this diamond is 67.8%, which is too deep!. (Recommended depth percentage for Marquises is between 59% and 65%)

Depth percentage for marquises is calculated with the following formula:
Depth % = (total depth ÷ width) × 100

0.55 carat Marquise (7.70×4.28×2.90mm) depth %:
Total depth: 2.90 mm
Width = 4.28 mm
Depth % = (2.90 ÷ 4.28 ) × 100 = 67.8%

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.


Face-up size evaluation for 0.62 carat Marquise (8.00×4.30×3.00mm)

The face-up size of this 0.62 carat Marquise (8.00×4.30×3.00mm) is out of normal range for 0.62ct diamonds of this shape. Compared to 0.62 carat Marquise 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.

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 - it looks like a well cut 0.51ct Marquise.

0.62 carat Marquise reference diamond

Since there are no specific ideal proportions defined for Marquise cuts, an estimation formula is used to calculate the Marquise reference diamond.
Parameters:
Weight: 0.62ct
Depth: 61%
L/W ratio: 2
 
Calculated values:
Length: 8.86 mm
Width: 4.43 mm
Depth: 2.7 mm
*Est. face-up area: 27.87 mm²
Note: Marquise diamonds with face-up area of within 9% lower and 12% higher than reference Marquise diamond area are considered to be of adequate face-up size.
* Estimated Face-up area: Face-up area of Marquise 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 0.55 carat Marquise (7.70×4.28×2.90mm)

The face-up size of this 0.55 carat Marquise (7.70×4.28×2.90mm) is slightly out of normal range for 0.55ct diamonds of this shape. Compared to 0.55 carat Marquise 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.

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 0.55ct Marquise looks like a well cut 0.48ct.

0.55 carat Marquise reference diamond

Since there are no specific ideal proportions defined for Marquise cuts, an estimation formula is used to calculate the Marquise reference diamond.
Parameters:
Weight: 0.55ct
Depth: 61%
L/W ratio: 2
 
Calculated values:
Length: 8.52 mm
Width: 4.26 mm
Depth: 2.6 mm
*Est. face-up area: 25.77 mm²
Note: Marquise diamonds with face-up area of within 9% lower and 12% higher than reference Marquise diamond area are considered to be of adequate face-up size.
* Estimated Face-up area: Face-up area of Marquise 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 0.62ct Marquise (8.00×4.30×3.00mm):
Top surface area = 24.42 mm²
Weight = 0.62ct

Face-up area per carat = 24.42 ÷ 0.62 = 39.39mm²/ct

Face-up area per carat for 0.55ct Marquise (7.70×4.28×2.90mm):
Top surface area = 23.4 mm²
Weight = 0.55ct

Face-up area per carat = 23.4 ÷ 0.55 = 42.55mm²/ct

Enter your screen size (diagonal)

My screen size is  inches



Actual size is currently adjusted to screen.

If your screen (phone, tablet, or monitor) is not in diagonal, then the actual size of a diamond, ring and finger will not be shown correctly.