Correct me if I am wrong, but it seems like there are only 4 vendors on the internet that give any valuble detailed information about their diamonds(Sarin/OGI, B-scope, etc)
Several folks provide more detailed info like this but don't put the information up on their websites. All that accessible information does make for a nice on-line shopping experience though
Those four are noted for having cutting edge info on their sites. It's a labor intensive effort with high equipment costs, so a lot of internet vendors haven't been able to pull it off.
As Elmo says, there's some dealers out there who have the equipment but might not have an internet presence, or don't have results posted. They might be able to furnish what you're looking for upon request.