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Question about HCA and girdle size

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Second City

Rough_Rock
Joined
Dec 5, 2006
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31
I know that the results produced by HCA are for diamonds that have a medium girdle. Does this include thin-medium and medium-slightly thick, or does the girdle have to be entirely medium? Also, how "symmetrical" does a diamond have to be to fall within the criteria established for using the HCA? Thanks.
 

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Garry H (Cut Nut)

Super_Ideal_Rock
Trade
Joined
Aug 15, 2000
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14,581
From the data you enter HCA calculates the girdle thickness - so it is taken into account - especially in spread.

Symmetry though is an unknown - that is one of the reasons I like slightly shallower stones because poor sym is rather critical when you get nearer steep deep proportion sets.
 
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