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Help with interpreting Ideal Scope Images!

P: 9/10/2004 6:58:45 PM
wanderlost Cut Rock Total Posts: 124 Last Post: 9/15/2004 Member Since: 11/3/2003	I've just learned that [perhaps] one of the things I thought was true about IS images is untrue - that being that the black regions (like nice strong arrows) are not equal (or even better) than full red regions. (I had assumed that as the black regions were likely caused by the pupil or the camera lens peering through the hole in the red reflector that these areas would indicate excellent performance and light return when light entered the table)... This leads me to wonder a bit on how to really rank IS colors... if it's not that black is equal to red, then, would the following order be appropriate? - Red Black dark pink (assuming only 3 shades of pink) pink grey light pink white or am I out of line on this.... thanks for your help.
Posted: 9/10/2004 6:58:45 PM

There are 1 replies to this message. There are 1 replies on this page.

P: 9/10/2004 7:11:57 PM
Garry H (Cut Nut) Ideal Rock Total Posts: 11,579 Last Post: 11/23/2009 Member Since: 8/16/2000	Thanks for asking WL Read this It was written in 1975 by Beryl who is a very special researcher (like a bulldog) and posts many very informative things here and previously on DT. We have such a thread running at present Fire and dispersion techy help please? You (and others who have read some of Rhino's stuff) will benefit from a fuller understanding of what the dark stars are caused by. Once you understand that darkness = no light but contribution to contrast and because of lower light return (yes less, not more) a greater potential for fire, then you can begin to understand why dark is good. But you ask for a ranking of 1 to 7 for various factors. It would be better if we examined very specific images and stones. Preferably ones with Sarin .srn files that we can use as DiamCalc and Gemadviser files. Happy to discuss any if you'all want to find some good and bad eg's. I also have the srn files for those princess cuts I posted on the dispersion thread. Garry Holloway FGAA DipDT HCA and Ideal-scope developer http://www.ideal-scope.com and http://www.HollowayDiamonds.com.au
Posted: 9/10/2004 7:11:57 PM

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