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Diamond Tutorial
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Fancy Cut Diamonds
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60:60
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Diamonds :)
Heart shape diamond

Heart Cut Diamond

The Heart shape is a symbol of love for many.  The Heart is a brilliant cut with curved lobes that stem from a centered cleft.  The lobes slope down to form a point.  The preferred length to width ratio for Hearts is 1:1.

Special Characteristics of the Heart Cut Diamond Shape

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

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

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

http://www.pricescope.com/idealbb/view.asp?topicID=53703

Threads discussing Heart Cut Quality

http://www.pricescope.com/idealbb/view.asp?topicID=109220

http://www.pricescope.com/idealbb/view.asp?topicID=63771

 


 
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