colored diamonds - real or "treated"?

[Wfpajfad]

Hey,

I wish to find a very special stone (probably a diamond) for wedding - and "discovered" some cool website with lotsa which looks professional, got Diamonds from Israel and all - but how do I know about the certification?

It is really important to me because I saw there a red diamond for around 4,000 bucks - and I remember those RED diamonds are much more expensive than that (I think millions)..

So how could I know it is not "treated" diamond (though "treated" are ok?)

 

[chrono]

Any time you are spending a good amount of money, it's always a good idea for the FCD to be accompanied by a GIA memo, which will tell you if it's been treated or untreated, in addition to the colour grading, which sets the price.