Hello. I went to Graff''s boutique at Saks in NYC when I was looking for a canary diamond. The staff was very helpful, and I looked at about 12 stones of different intensity. I didn''t end up buying my canary from them, though. Here''s a link to their website: http://www.graffdiamonds.com/
I think Graff is even more expensive than Tiffany''s do not know how Graff, Harry Winston, and Kauffeman de Suisse stack up...but think if you know your stuff, you can go to any reputable dealer...
I love Graffs print adds...there is one where this woman is just draped in asschers...necklace, rings, earrings, i love it, makes me drool every time I see it!
Those graff photos are pretty amazing...does anyone else think the model looked a bit like that country singer Crystal Gale? (when she was younger and if she had been a supermodel)