GemologyOnline.com
https://www.gemologyonline.com/Forum/phpBB2/

raman spectroscopy
https://www.gemologyonline.com/Forum/phpBB2/viewtopic.php?f=58&t=740
Page 1 of 1

Author:  jleb [ Fri May 19, 2006 12:34 pm ]
Post subject:  raman spectroscopy

I've been looking at the articles on Be diffused sapphire. Does anyone know if Raman Spectroscopy has been considered as a detection means?

Pros/Cons to that approach vs laser ablation ?

Author:  Rockdoc [ Mon Jul 03, 2006 4:21 pm ]
Post subject:  BE testing

There is quite an article on detection in the AGTA site.

They just purchased a LIBS machine, which is the proper testing instrument to detect the level of BE in a stone. It is a very pricey unit, so not sure that it would be practical for the smaller entity to own one. I know they have raman capability as well as if/vis there, and apparently raman isn't useful for this application.

Because BE can occur naturally, you really need to know just how much BE is in the stone, to form an opinion as to whether it happened naturally, or the BE was induced in the heat treatment process.

Rockdoc

Page 1 of 1 All times are UTC - 4 hours
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
http://www.phpbb.com/