Oval Cut Diamond

Oval shape diamond

An Oval cut is an elliptical shaped brilliant cut.  When well proportioned, Oval diamonds can elongate the finger while exhibiting a brilliance between that of a Round and a Marquise.  Recommended length to width ratio for Ovals is between 1.33 to 1.66.

**Visit Oval Cut Diamond Prices for the latest retail diamond price statistics.

Special Characteristics of Oval Cut Diamonds

Like other fancy shapes, Oval cuts cannot be judged solely by the numbers.  It is best to see the stones in person or view vendor photos.  Look out for prominent bow ties.  Well proportioned Oval cuts should have a minimal bow tie effect.  A bow tie is a dark area across the center width of many fancy shapes—a result of varying pavilion angles.  Bow ties show as light return that is blocked by the head of the viewer.  Fancy shapes like Ovals, Marquises, Hearts, and Pears will have bow ties of varying degrees, and it is best to avoid excessively deep or shallow stones.  Look for pleasing, graceful, and symmetrically shaped Oval cuts.  Ovals also may show color and inclusions more than other shapes. 

Size Matters

Oval cuts generally look larger from the “face up” position than other shapes of the same carat weight. 

Basic Oval Cut Guidelines courtesy of http://www.gemappraisers.com/index.asp

CUT CLASSES

Class 1A

Class 1B

Class 2A

Class 2B

Class 3A

Class 3B

Class 4A

Class 4B

 

Ideal cut

Premium cut

International fine trade cut

US domestic average cut

below average

Table %

55-60%

53-61.5%

52-62%

51-64%

51-67%

49-70%

48-72%

>72%
<48%

Crown Height %

12-15%

11.5-16%

11-16.6%

10.1-17.5%

9-18%

8.3-18.9%

7.8-19.5%

<7.8%
>19.5%

Girdle thickness
Word descriptions and percentages.

V. Thin to Sl. Thick
(0.4%-4.5%) or
Thin to Thick (1%-5.5%)

V.Thin to Thick(0.4%-5.5%)

Very Thin to Very Thick
(0.4% to 7.0%)

Extremely thin to
Extremely thick
(0.0% to >7.0%)

Total Depth %

59.0-63.0%

63.1-65.4%

56-68.5%

46-71%

43-73%

>73%
< 43%

Length:Width Ratios
Trade preferences.
A matter of personal taste and choice.

Pear 1.50-1.75
Marquise 1.75-2.25
Heart 0.98-1.02
Oval 1.33-1.66

1.26-1.99
1.51-2.49
1.24-0.91
1.26-1.74


> Class 3 < Class 3

Polish/Symmetry
Not a primary determining factor.

Excellent to Good

Good or Fair

Poor to Fair

CUT CLASSES

Class 1A

 

Ideal cut

Table %

55-60%

Crown Height %

12-15%

Girdle thickness
Word descriptions and percentages.

V. Thin to Sl. Thick
(0.4%-4.5%) or
Thin to Thick (1%-5.5%)

Total Depth %

59.0-63.0%

Length:Width Ratios
Trade preferences.
A matter of personal taste and choice.

Pear 1.50-1.75
Marquise 1.75-2.25
Heart 0.98-1.02
Oval 1.33-1.66

Polish/Symmetry
Not a primary determining factor.

Excellent to Good

CUT CLASSES

Class 1B

 

Premium cut

Table %

53-61.5%

Crown Height %

11.5-16%

Girdle thickness
Word descriptions and percentages.

V. Thin to Sl. Thick
(0.4%-4.5%) or
Thin to Thick (1%-5.5%)

Total Depth %

59.0-63.0%

Length:Width Ratios
Trade preferences.
A matter of personal taste and choice.

Pear 1.50-1.75
Marquise 1.75-2.25
Heart 0.98-1.02
Oval 1.33-1.66

Polish/Symmetry
Not a primary determining factor.

Excellent to Good

CUT CLASSES

Class 2A

 

International fine trade cut

Table %

52-62%

Crown Height %

11-16.6%

Girdle thickness
Word descriptions and percentages.

V. Thin to Sl. Thick
(0.4%-4.5%) or
Thin to Thick (1%-5.5%)

Total Depth %

59.0-63.0%

Length:Width Ratios
Trade preferences.
A matter of personal taste and choice.

Pear 1.50-1.75
Marquise 1.75-2.25
Heart 0.98-1.02
Oval 1.33-1.66

Polish/Symmetry
Not a primary determining factor.

Excellent to Good

CUT CLASSES

Class 2B

 

International fine trade cut

Table %

51-64%

Crown Height %

10.1-17.5%

Girdle thickness
Word descriptions and percentages.

V.Thin to Thick(0.4%-5.5%)

Total Depth %

63.1-65.4%

Length:Width Ratios
Trade preferences.
A matter of personal taste and choice.

Pear 1.50-1.75
Marquise 1.75-2.25
Heart 0.98-1.02
Oval 1.33-1.66

Polish/Symmetry
Not a primary determining factor.

Excellent to Good

CUT CLASSES

Class 3A

 

US domestic average cut

Table %

51-67%

Crown Height %

9-18%

Girdle thickness
Word descriptions and percentages.

Very Thin to Very Thick
(0.4% to 7.0%)

Total Depth %

56-68.5%

Length:Width Ratios
Trade preferences.
A matter of personal taste and choice.

1.26-1.99
1.51-2.49
1.24-0.91
1.26-1.74

Polish/Symmetry
Not a primary determining factor.

Good or Fair

CUT CLASSES

Class 3B

 

US domestic average cut

Table %

49-70%

Crown Height %

8.3-18.9%

Girdle thickness
Word descriptions and percentages.

Very Thin to Very Thick
(0.4% to 7.0%)

Total Depth %

46-71%

Length:Width Ratios
Trade preferences.
A matter of personal taste and choice.

1.26-1.99
1.51-2.49
1.24-0.91
1.26-1.74

Polish/Symmetry
Not a primary determining factor.

Good or Fair

CUT CLASSES

Class 4A

 

below average

Table %

48-72%

Crown Height %

7.8-19.5%

Girdle thickness
Word descriptions and percentages.

Extremely thin to
Extremely thick
(0.0% to >7.0%)

Total Depth %

43-73%

Length:Width Ratios
Trade preferences.
A matter of personal taste and choice.


> Class 3 < Class 3

Polish/Symmetry
Not a primary determining factor.

Poor to Fair

CUT CLASSES

Class 4B

 

below average

Table %

>72%
<48%

Crown Height %

<7.8%
>19.5%

Girdle thickness
Word descriptions and percentages.

Extremely thin to
Extremely thick
(0.0% to >7.0%)

Total Depth %

>73%
< 43%

Length:Width Ratios
Trade preferences.
A matter of personal taste and choice.


> Class 3 < Class 3

Polish/Symmetry
Not a primary determining factor.

Poor to Fair

Courtesy of D.S. Atlas, Accredited Gem Appraisers, © AGA 1998-2004

 

Oval Cuts posted on Pricescope

Oval cut diamond posted by Kellybell Oval cut diamond posted by Kaleigh
Posted by kellybell                                                     Posted by Kaleigh

 

Oval cut diamond posted by Marvel   Oval cut diamond posted by Ephemery
Posted by Marvel                                                     Posted by Ephemery

 

Threads with pictures of Oval Cuts

https://www.pricescope.com/forum/rockytalky/helpful-threads-archive-t46298.html

https://www.pricescope.com//forum/rockytalky/helpful-threads-archive-t109900.html

Threads discussing Oval Cut Quality

https://www.pricescope.com/forum/rockytalky/helpful-threads-archive-t119802.html

https://www.pricescope.com/forum/rockytalky/helpful-threads-archive-t93345.html

 


 
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