Heart Cut Diamonds

Heart shape diamond

Heart shaped diamonds are brilliant cuts with curved lobes that stem from a centered cleft.  The
lobes slope down to form a sharp point.  The preferred length to width ratio
for Hearts is 1:1.

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

Special Characteristics of Heart Cut Diamonds

Color can be more visible in Hearts, especially in the lobe areas. 
Hearts may also show a bow tie. 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 hearts with balanced and symmetrical
proportions.  A defined cleft with even lobes and a sharp point are
generally preferred.

Size Matters

Hearts look similar in size to Round Brilliants from the “face up”
position, but inconsistent proportions can lead to differences in
relative sizes.  In general, Hearts face up well for their carat weight.

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

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AGA hearts cut diamond grading chart

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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

Heart Cuts posted on Pricescope

Heart Cut Diamond Shape posted Daibai  Hearts Cut Diamond posted by Blinkydoll
Posted by daibay                                                     Posted by blinkydoll

Hearts Cut Diamond posted didiamond     Heart Cut Diamond Shape Posted by KittyTiger
Posted by didiamond                                            Posted by KittyTiger

Threads with pictures of Heart Cuts

https://www.pricescope.com/forum/rockytalky/helpful-threads-archive-t53703.html

Threads discussing Heart Cut Quality

https://www.pricescope.com/forum/rockytalky/helpful-threads-archive-t109220.html

https://www.pricescope.com/forum/rockytalky/helpful-threads-archive-t63771.html

 

 

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