is rubellite generally treated?

[innerkitten]

I know most a lot of tourmalines are treated in some way.

 

[cflutist]

According to the AGTA Source Directory (c2000):

For pink/red/purple tourmaline:

Heating is occasionally used - excellent stability
Irradiation is commonly used - good stability
Oiling/Resin infusion is occasionally used - good to fair stability
Dying is occasionally used - fair to poor stability

 

[rubydick]

A lot of Brazilian rubellite is either heated and/or irradiated.

Regarding Nigerian material, that of a burgundy color is generally heated, but the fine Nigerian rubellite in rich reds and fuscia pinks is completely untreated. Sadly, that deposit is completely depleted.

For more information on gem treatments, see this link:

Palagems.com Online Enhancements Guide