I have a beautiful natural white sapphire stone that is nearly 3KT and nearly 9mm in diameter. It is an "early American" round cut stone. It is absolutely stunning. I just had it set in a thick, solid 22KT gold setting with one smaller white sapphire on each side. If you are interested in purchasing this very very rare stone, please contact me at firstname.lastname@example.org. White sapphires are the perfect gift for the 5th or 45th anniversary... and this one is by far stunning! Gem collectors- this gem is so rare that it's sure to be one of your favorite prized pieces! Starting $6K.
I am not sure. I am having it certified and they should be able to tell me. One jeweler said it is untreated while i've read that all sapphires are treated - the white are usually found brownish so they must be treated I would think... I can send you photos via email if you send me your address. (email@example.com)