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 » RockyTalky
»  » Effect of girdle thickness on Holloway Cut Analysis
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Effect of girdle thickness on Holloway Cut Analysis |
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| P: 9/24/2004 4:15:41 PM | |
leonhardtx Rough Rock Total Posts: 4 Last Post: 9/24/2004 Member Since: 9/7/2004 |
The fine print in the HCA analysis says it applies to diamonds with a medium girdle. Yet many diamonds with good dimensions are "thin" or "thin to slightly thin". I see few that are "medium". Should I be concerned about this? If so, how much should I discount a diamond with a thinner girdle when its HCA scores are otherwise OK?
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| Posted: 9/24/2004 4:15:41 PM | |
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There are 2 replies to this message. There are 2 replies on this page. |
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| P: 9/24/2004 4:29:04 PM | |
Garry H (Cut Nut) Ideal Rock Total Posts: 11,567 Last Post: 11/21/2009 Member Since: 8/16/2000 |
Girdle thickness makes little difference to optical performance, but it does affect the HCA spread component which has about a 20% weighting factor on HCA results. read about it all here Garry Holloway FGAA DipDT |
| Posted: 9/24/2004 4:29:04 PM | |
| P: 9/24/2004 5:14:49 PM | |
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leonhardtx Rough Rock Total Posts: 4 Last Post: 9/24/2004 Member Since: 9/7/2004 |
Thanks Garry.
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| Posted: 9/24/2004 5:14:49 PM | |
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