Last updated: March 1, 2009
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Diamond Specifications |
Rapaport Offices:
New York
Tel: 212-354-9100
(Myles)
Italy
Tel: +39-02-400-47274
(Francesco)
Belgium
Tel: +32-3-232-3300
(Shavit)
Israel
Tel: +972-3-6133330
(Amit)
India
Tel: +91-22-6637-6633
(Pooja)
China
Tel: +86-21-50470197
(Julius)
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Rapaport Diamond Specifications - General |
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Rapaport |
RapSpec-1 |
RapSpec-2 |
RapSpec-3 |
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Shape |
Round Brilliant |
Round Brilliant |
Round Brilliant |
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Cut Grade |
Excellent |
Excellent or Very Good |
Excellent or Very Good |
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Polish / Symmetry |
Excellent or Very Good |
Excellent or Very Good |
Excellent or Very Good |
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Total Depth % |
58.6% - 62.9% |
58.0% - 63.5% |
58.0% - 63.5% |
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Table % |
54% - 63% |
52% - 65% |
52% - 65% |
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Girdle Thickness |
Very Thin/Thin-Medium or Medium-Thick |
Very Thin-Thick |
Very Thin-Thick |
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Culet Size |
No large, medium, chip or abraded |
No large, medium, chip or abraded |
No large, medium, chip or abraded |
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Fluorescence |
None or Faint Blue |
None or Faint Blue |
Medium Blue OK |
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Comments |
No treatments |
No treatments |
No treatments |
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No crown angle comment |
No crown angle comment |
No crown angle comment |
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Additional criteria for 1.00 - 1.50ct |
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Size in Carats |
Minimum Diameter (mm) |
Minimum Diameter (mm) |
Minimum Diameter (mm) |
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1.00 - 1.09 |
6.40
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6.40 |
6.40
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1.10 - 1.19 |
6.60
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6.55 |
6.55 |
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1.20 - 1.29 |
6.80 |
6.75 |
6.75 |
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1.30 - 1.39 |
7.00 |
6.90 |
6.90 |
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1.40 - 1.49 |
7.20 |
7.10 |
7.10 |
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Notes |
RapSpec-1 girdle should not be Very Thin to Thick as this may indicate wavy girdle
RapSpec-1 standards for center or black inclusions, graining and large naturals
will be stricter than RapSpec 2 and 3
RapSpec-3 is identical to RapSpec-2 except that medium blue fluorescence is acceptable
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© Copyright 2008 by Martin Rapaport |
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