Synthetic Green Jadeite

I found the info on synthetic green jadeite @ http://www.patentstorm.us/patents/6908674-description.html useful + I always refer to Alan Hodgkinson techniques for its simplicity/affordability.

Here is what Alan Hodgkinson has to say about filter results + other tests:
The Chelsea Filter shows synthetic green jadeite as bluish gray in either tungsten or halogen light + the few synthetic green jadeites studied showed a lack of consistent color throughout each stone + the swirled color eccentricities were accompanied by what can best be described as 'cotton wool' inclusions + synthetic green jadeite looked grey under longwave, but fluoresced a distinct green under the shortwave.

If you are doubtful, always consult a reputed gem testing laboratory.