Hi,
If most of the green sapphires are not the result of any treatment involving the use of additives like beryllium, a strongly green sapphire or bluish green sapphire might still be green after a "beryllium process" whihc was supposed to turn it into a yellow sapphire.
As consequence in some rare cases, you may find some heated green sapphires containing some beryllium but usualy the purpose is not to my knowledge to produce green sapphires.
The views expressed here are V. Pardieu’s opinions and do not necessarily reflect those of GIA Laboratory Bangkok (http://www.giathai.net)where he is an employee since Dec 2008.
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