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»  » Diamond Prices and Grading »
 » RockyTalky
»  » Can someone help me understand the Diamcalc
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Can someone help me understand the Diamcalc |
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| P: 8/6/2004 7:23:42 PM | |
bling Cut Rock Total Posts: 487 Last Post: 5/17/2005 Member Since: 4/17/2003 |
for this stone.. maybe rich can run it and post it? i have run it but im afraid i dont "get it"..thanks Depth 59.7% Table 56.6% crown 34.2 deg pavillion 40.9 deg girdle medium thats all the info i have... or what about this one? table 55.1 depth 60.6 crown 32.7deg pavillion 40.7 deg thanks for any ideas on what they think!  
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| Posted: 8/6/2004 7:23:42 PM | |
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There are 6 replies to this message. There are 6 replies on this page. |
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| P: 8/7/2004 12:27:14 PM | |
Rhino Ideal Rock Total Posts: 4,865 Last Post: 11/22/2009 Member Since: 3/29/2001 |
Hey bling!
To get the best results from DiamCalc is an actual scan of the stone in question via Sarin whose 3d model can then be imported into the software. The scan pretty accurately portrays the optical results of the diamond via LightScope or FireScope.
Here are pics of the results of an actual scanned diamond next to it's DiamCalc counterpart. Note how similar the results are in the graphics.
To be continued...  Rhino |
| Posted: 8/7/2004 12:27:14 PM | |
| P: 8/7/2004 12:31:36 PM | |
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Rhino Ideal Rock Total Posts: 4,865 Last Post: 11/22/2009 Member Since: 3/29/2001 |
For basic DiamCalc results the following *minimums* are needed (highlighted in red)
And while this is *good* info to have it still does not tell the whole story.  Rhino |
| Posted: 8/7/2004 12:31:36 PM | |
| P: 8/7/2004 12:33:44 PM | |
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Rhino Ideal Rock Total Posts: 4,865 Last Post: 11/22/2009 Member Since: 3/29/2001 |
There is a section to input star length and lower girdle depth which of course adds more pieces to the puzzle for the g-man who has the tools to measure the minor facets. This gives an even closer result to the actual diamond but does not account for the variances which can disrupt the optical symmetry.  Rhino |
| Posted: 8/7/2004 12:33:44 PM | |
| P: 8/7/2004 12:40:35 PM | |
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Rhino Ideal Rock Total Posts: 4,865 Last Post: 11/22/2009 Member Since: 3/29/2001 |
Altering minor facet measurements can change the appearance of the diamomd from this ...  Rhino |
| Posted: 8/7/2004 12:40:35 PM | |
| P: 8/7/2004 12:44:01 PM | |
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Rhino Ideal Rock Total Posts: 4,865 Last Post: 11/22/2009 Member Since: 3/29/2001 |
to this ... which ultimately affects it's brilliance & scintillation primarily. So while DiamCalc is an excellent tool, sometimes results can be a little misleading if all of the proper information is not input into it. When we are calling suppliers for Sarin information not one that I know of provide minor facet details to accurately portray the actual appearance of the diamond which is why a physical analysis, of course, is preferred.
So bling... if you want DiamCalc results give us *at least* the basics and we can help. That is, if Rich doesn't post it before I do.
 Regards,  Rhino |
| Posted: 8/7/2004 12:44:01 PM | |
| P: 8/9/2004 12:52:00 PM | |
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bling Cut Rock Total Posts: 487 Last Post: 5/17/2005 Member Since: 4/17/2003 |
Thanks Rhino..as always..quite the lesson!  well be in touch! thanks! 
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| Posted: 8/9/2004 12:52:00 PM | |
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