Question on HCA

[pwings]

Im looking at a 2.07K stone with these measurements.
8.22 - 8.26 x 5.06

Table: 56%
Depth:61.5%
Crown: 34.8
Pavilion: 40.9

Here is the results from HCA:

Light Return: Excellent
Fire: Very Good
Scintillation:Very Good
Spread or diameter for weight: Very Good

Total Visual Performance 1.7 - Excellent
within TIC range



For curiousity, I was playing around with the numbers. And if the Pavilion was 40.8 instead of 40.9. The result would have been:

Light Return: Excellent
Fire: Excellent
Scintillation: Excellent
Spread or diameter for weight: Very Good
Total Visual Performance 1.4 - Excellent
within TIC range

The tenth of a degree lower made fire and scintilation go from very goods to excellents. Should I disregard this stone for comming up short of excellents? Will there be a visible difference between very goods and excellents? Or you think it shouln''t matter because the very goods are still within TIC range? Thoughts please.

 

[JulieN]

Date: 5/8/2006 10:32:28 AM
Author:pwings
The tenth of a degree lower made fire and scintilation go from very goods to excellents. Should I disregard this stone for comming up short of excellents? no.

My thoughts? Get a Ideal-scope picture to be sure. I've seen pictures where the angles are great, and the IS image shows leakage. or, at least, much more leakage than I expected. HCA is just a predictor. You're putting down 20K! Don't buy by the numbers.

Either get an Ideal-scope, or get an appraisal from one of the PS appraisers who know exactly what PSers expect (details!)

 

[Garry H (Cut Nut)]

Date: 5/8/2006 2:39:49 PM
Author: JulieN

Date: 5/8/2006 10:32:28 AM
Author:pwings
The tenth of a degree lower made fire and scintilation go from very goods to excellents. Should I disregard this stone for comming up short of excellents? no.

My thoughts? Get a Ideal-scope picture to be sure. I''ve seen pictures where the angles are great, and the IS image shows leakage. or, at least, much more leakage than I expected. HCA is just a predictor. You''re putting down 20K! Don''t buy by the numbers.

Either get an Ideal-scope, or get an appraisal from one of the PS appraisers who know exactly what PSers expect (details!)

Good advice Julie

 

[Chesapeake]

Julie,
I''m not sure how to proceed in looking for new stones for my ring???I have alot to learn and don''t know where to start. I''m visual and need to see the stones. How should I begin?