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What cut is this? RB or transitional?

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Rhea

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I have a stone from a 1920''s setting. Right now it''s set in a 3 prong setting. It has a very small culet, but looks like a RB. What is it? Don''t mind the fuzz and dirt in the photo.

Cropped Diamond Photo - what is it.jpg
 

strmrdr

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RB
Have a side view?
 

Rhea

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Not that I can get to, I''m not the photoshop genius that DH is. It has a low crown.
 

LaurenThePartier

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Looks RB to me.
 

strmrdr

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Date: 2/8/2009 2:37:45 PM
Author: Addy
Not that I can get to, I''m not the photoshop genius that DH is. It has a low crown.
np... the lgf is in the 77% range judging by the arrows which makes it a modern RB.
 

Rhea

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Date: 2/8/2009 2:39:22 PM
Author: strmrdr
Date: 2/8/2009 2:37:45 PM

Author: Addy

Not that I can get to, I''m not the photoshop genius that DH is. It has a low crown.

np... the lgf is in the 77% range judging by the arrows which makes it a modern RB.

Storm, do you mind translating that into English?
 

strmrdr

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Date: 2/8/2009 2:41:34 PM
Author: Addy
Date: 2/8/2009 2:39:22 PM

Author: strmrdr

Date: 2/8/2009 2:37:45 PM


Author: Addy


Not that I can get to, I''m not the photoshop genius that DH is. It has a low crown.


np... the lgf is in the 77% range judging by the arrows which makes it a modern RB.


Storm, do you mind translating that into English?

The lower girdle facets are in the 77% range causing narrow arrows where in a older stone they would be under 65% and often much under making the arrows fatter.
 

strmrdr

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77

77lgfexample.jpg
 

strmrdr

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65

65lgfexample.jpg
 

strmrdr

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50

50lgfexample.jpg
 

Rhea

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Thank you, the diagrams are very helpful.
 

strmrdr

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This has a very small table but the general under the table look applies...

smalltablelgfchart.jpg
 
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