Flower Engagement Rings: A Blooming Symbol of Love and Romance
When it comes to picking out an engagement ring, there’s something truly enchanting about the choice of a flower design. Not only do these rings bring a touch of nature’s…
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 |
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Table % |
55-60% |
53-61.5% |
52-62% |
51-64% |
51-67% |
49-70% |
48-72% |
>72% |
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% |
Girdle thickness |
V. Thin to Sl. Thick |
V.Thin to Thick(0.4%-5.5%) |
Very Thin to Very Thick |
Extremely thin to |
||||
Total Depth % |
59.0-63.0% |
63.1-65.4% |
56-68.5% |
46-71% |
43-73% |
>73% |
||
Length:Width Ratios |
Pear 1.50-1.75 |
1.26-1.99 |
|
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Polish/Symmetry |
Excellent to Good |
Good or Fair |
Poor to Fair |
CUT CLASSES |
Class 1A |
Ideal cut |
|
Table % |
55-60% |
Crown Height % |
12-15% |
Girdle thickness |
V. Thin to Sl. Thick |
Total Depth % |
59.0-63.0% |
Length:Width Ratios |
Pear 1.50-1.75 |
Polish/Symmetry |
Excellent to Good |
CUT CLASSES |
Class 1B |
Premium cut |
|
Table % |
53-61.5% |
Crown Height % |
11.5-16% |
Girdle thickness |
V. Thin to Sl. Thick |
Total Depth % |
59.0-63.0% |
Length:Width Ratios |
Pear 1.50-1.75 |
Polish/Symmetry |
Excellent to Good |
CUT CLASSES |
Class 2A |
International fine trade cut |
|
Table % |
52-62% |
Crown Height % |
11-16.6% |
Girdle thickness |
V. Thin to Sl. Thick |
Total Depth % |
59.0-63.0% |
Length:Width Ratios |
Pear 1.50-1.75 |
Polish/Symmetry |
Excellent to Good |
CUT CLASSES |
Class 2B |
International fine trade cut |
|
Table % |
51-64% |
Crown Height % |
10.1-17.5% |
Girdle thickness |
V.Thin to Thick(0.4%-5.5%) |
Total Depth % |
63.1-65.4% |
Length:Width Ratios |
Pear 1.50-1.75 |
Polish/Symmetry |
Excellent to Good |
CUT CLASSES |
Class 3A |
US domestic average cut |
|
Table % |
51-67% |
Crown Height % |
9-18% |
Girdle thickness |
Very Thin to Very Thick |
Total Depth % |
56-68.5% |
Length:Width Ratios |
1.26-1.99 |
Polish/Symmetry |
Good or Fair |
CUT CLASSES |
Class 3B |
US domestic average cut |
|
Table % |
49-70% |
Crown Height % |
8.3-18.9% |
Girdle thickness |
Very Thin to Very Thick |
Total Depth % |
46-71% |
Length:Width Ratios |
1.26-1.99 |
Polish/Symmetry |
Good or Fair |
CUT CLASSES |
Class 4A |
below average |
|
Table % |
48-72% |
Crown Height % |
7.8-19.5% |
Girdle thickness |
Extremely thin to |
Total Depth % |
43-73% |
Length:Width Ratios |
|
Polish/Symmetry |
Poor to Fair |
CUT CLASSES |
Class 4B |
below average |
|
Table % |
>72% |
Crown Height % |
<7.8% |
Girdle thickness |
Extremely thin to |
Total Depth % |
>73% |
Length:Width Ratios |
|
Polish/Symmetry |
Poor to Fair |
Courtesy of D.S. Atlas, Accredited Gem Appraisers, © AGA 1998-2004