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/

 

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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