Green "spot" on

[Firechase]

Has anyone seen an ASET image with a big green splotch like the one at the 1:00 position on this stone? Is that truly light leakage? This is an AGS 000, so I am confused.

 

[stone-cold11]

That is not leakage. Green is just lower orientation of light return. Sometimes there are scanning error by AGS in the ASET map. A real ASET image will tell if this is the case.

 

[Firechase]

That makes sense, because another stone in close sequence to this one had a smaller green spot in the same place, and they both looked like perfectly good stones!

Thank you very much!

 

[yssie]

If you want more info (not specific to this case w/ this stone, but just in general what these sorts of artifacts can mean, like SC said we don't have any info re. scanning error, etc.) -

http://www.goodoldgold.com/4Cs/NewCutGrading/PaintingAndDiggingDugOutGirdle/

 

[Firechase]

Thanks Yssie for a great link! I should have known to go to GOG for research!