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questions about girdle on round brilliant cut

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platinumtangerine

Rough_Rock
Joined
Nov 2, 2011
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Hi All,

I'm looking at a diamond that has a "thin to medium" girdle, but the girdle measurements on the AGS report are 0.9% to 3.5% - isn't that "extremely thin" to medium rather than "thin" to medium? Is the variation too large - for example, would 2.5% to 3.5% be better, or would a consistent girdle be better? Is this a bad measurement that I should be concerned about? How do girdle measurements affect the optical performance of a rbc?

Description:
Shape: Round
Carat weight: 1.053
Cut: Hearts & Arrows Ideal AGS 0
Color: G
Clarity: VS1
Certificate: AGS
Depth: 61.0%
Table: 56.1%
Polish: Ideal
Symmetry: Ideal
Girdle: Thin to medium faceted
Culet: None
Flourescence: None
Measurements: 6.56*6.61*4.02
Crown Angle: 33.9
Crown %: 14.70
Pavilion Angle: 40.9
Pavilion %: 43.10

Thanks for your help :bigsmile:
 
AGSL and GIA treat girdle measurements differently. GIA measures at the 16 thinnest positions. AGSL measures thinnest and thickest places everywhere along the girdle. This means that AGSL's ranges will naturally be wider than GIA's. The numbers you reported reflect thin-medium in the AGSL metric.
 
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