Diamond Jewelry Forums

Picture Gallery

Video Gallery

|

Search |

Posted Today |

Most Active |

Help

ť Home ť

ť Diamond Prices and Grading ť

ť RockyTalky ť

ť Diamcalc help

Diamcalc help

P: 12/8/2007 3:32:07 PM
nobody Rough Rock Total Posts: 45 Last Post: 5/4/2009 Member Since: 11/8/2007	Could someone please get me a diamcalc and critic on this diamond I am considering: Round Brilliant HCA 1.1 1.023ct (6.47-6.49X3.97) G color SI1 Cut ideal Depth 61.2% (3.97mm) Table 56.8% (3.68mm) Crown angle 34.7 (34.4-34.8) Crown % 14.9 (0.97mm) Star/Upper ratio 52:48 Pavillion angle 40.8 (40.7-40.9) Pavilllion % 42.9 (2.78mm) Lower Girdle % 76 Girdle Thin to Medium Faceted (1.4%-1.9%) Culet 0.4 (0.03mm) Polish ideal Symmetry ideal Fluor. neg Thank you.
Posted: 12/8/2007 3:32:07 PM

There are 6 replies to this message. There are 6 replies on this page.

P: 12/8/2007 4:10:07 PM
Garry H (Cut Nut) Ideal Rock Total Posts: 11,583 Last Post: 11/24/2009 Member Since: 8/16/2000	Look at this page http://www.octonus.com/oct/products/3dcalc/adviser/is/ Really you need a photo of the stone in order to know more Garry Holloway FGAA DipDT HCA and Ideal-scope developer http://www.ideal-scope.com and http://www.HollowayDiamonds.com.au
Posted: 12/8/2007 4:10:07 PM

P: 12/9/2007 2:24:06 PM
nobody Rough Rock Total Posts: 45 Last Post: 5/4/2009 Member Since: 11/8/2007	How is this:
Posted: 12/9/2007 2:24:06 PM

P: 12/9/2007 2:45:30 PM
nobody Rough Rock Total Posts: 45 Last Post: 5/4/2009 Member Since: 11/8/2007	Also when using the HCA, Which numbers do you use for the crown and pavilion? Depth % 61.2 Table % 56.8 Crown angle 34.4-34.8 Pavilion angle 40.7-40.9 Culet % 0.4 When I use the Crown angle 34.4-34.5 with Pavilion angle 40.7-40.9 the HCA goes from ranges 1-1.5 (which is fine) spread is at very good (light return, fire, scintillation is excellent) But, when I use the Crown angle 34.6 with Pavilion angle 40.9, HCA goes to 1.6 (still fine) but the spread and scintillation is now at very good. (light return,fire, is excellent) When I use the Crown angle 34.7-34.8 with Pavilion angle 40.9, HCA goes to 1.8 (still fine) but now the spread, the fire and scintillation is now at very good. (light return is excellent) The HCA range for this diamond goes from 1-1.8 depending on which set of numbers you use.
Posted: 12/9/2007 2:45:30 PM

P: 12/10/2007 9:25:52 PM
nobody Rough Rock Total Posts: 45 Last Post: 5/4/2009 Member Since: 11/8/2007
Posted: 12/10/2007 9:25:52 PM

P: 12/10/2007 9:47:03 PM
JohnQuixote Ideal Rock Total Posts: 5,212 Last Post: 5/24/2008 Member Since: 9/9/2004	Date: 12/9/2007 2:45:30 PM Author: nobody Also when using the HCA, Which numbers do you use for the crown and pavilion? Depth % 61.2 Table % 56.8 Crown angle 34.4-34.8 Pavilion angle 40.7-40.9 Culet % 0.4 When I use the Crown angle 34.4-34.5 with Pavilion angle 40.7-40.9 the HCA goes from ranges 1-1.5 (which is fine) spread is at very good (light return, fire, scintillation is excellent) But, when I use the Crown angle 34.6 with Pavilion angle 40.9, HCA goes to 1.6 (still fine) but the spread and scintillation is now at very good. (light return,fire, is excellent) When I use the Crown angle 34.7-34.8 with Pavilion angle 40.9, HCA goes to 1.8 (still fine) but now the spread, the fire and scintillation is now at very good. (light return is excellent) The HCA range for this diamond goes from 1-1.8 depending on which set of numbers you use. The numbers on the grading report are considered those of authority. They are most suitable for an HCA prediction. Bear in mind that any result below 2 is equaly appealing from a light return standpoint: A 1.0 is not 'better' than a 1.8. With regard to creating a DC simulation the basic numbers here are less useful than the actual ideal-scope and ASET images, which show the actual stone. John __________________________ John Pollard Whiteflash Director of Education 2004-2007
Posted: 12/10/2007 9:47:03 PM

P: 12/10/2007 10:40:43 PM
Garry H (Cut Nut) Ideal Rock Total Posts: 11,583 Last Post: 11/24/2009 Member Since: 8/16/2000	Date: 12/8/2007 4:10:07 PM Author: Garry H (Cut Nut) Look at this page http://www.octonus.com/oct/products/3dcalc/adviser/is/ Really you need a photo of the stone in order to know more ideal-scope pic is more helpful. I can see there is a tiny bit of painting, and the symmetry is excellent, so all up this makes a nice stone which is effectivley a slightly lower HCA score because of the painting Garry Holloway FGAA DipDT HCA and Ideal-scope developer http://www.ideal-scope.com and http://www.HollowayDiamonds.com.au
Posted: 12/10/2007 10:40:43 PM

Previous Page

Next Page

Ť What do you think of this Diamond Specs? 2.52/D/VS2 Ť

ť Need help finding an engagement ring! ť

Jump to:

Contact Us \| Back Home \| Privacy Statement \| Forum Agreement \| Forum Policies
Ideal BB Version: 0.1.5.4.beta1	Message forum software powered by the Ideal BB

Pricescope - Knowledge - Diamond Prices - Tools - Resources - About

Š 2000-2009 Pricescope. Terms of Use Privacy Policy Disclaimer
forum archives