belle
Super_Ideal_Rock
- Joined
- Nov 19, 2004
- Messages
- 10,285
neil, thank you for taking the time to show the idealscope comparisons. that was very helpful.Date: 7/26/2006 3:45:36 PM
Author: denverappraiser
Date: 7/25/2006 3:48:01 PM
Author:Guess
3) I''m not saying this happened, my appriaser seems very trustworthy, but...If you illuminated any old stone with redish bottom lighting, and then cropped a circle around the stone would it look like an amazing idealscope?
Guess,
An idealscope image involves several things. First, a diamond. Second, an idealscope. Third a lighting environment. Fourth, an imaging system. Fifth, an editing system. Sixth a display method.
5/6th of this has nothing to do with the diamond and adjusting them will produce wildly different results, even when using the same diamond. Comparing IS images can be useful when the other criteria can be counted on to be reasonably constant, like when the images were made by the same photographer using the same setup, but otherwise its very problematic. Interpreting an isolated image like you’ve asked leaves a margin of error that is so large that it makes the opinion useless.
Attached are 4 quick images. They are of the same stone, using the same light and the same camera. No photoshop editing other than cropping. The only difference has to do with the way the stone is mounted in the tool. Incidentally, the stone is an AGS1. The difference in photography is much more pronounced on stones that are really bad, I just don''t happen to have one handy.
Neil Beaty
GG(GIA) CGA(AGS) NAJA
Professional Appraisals in Denver
