I went to a couple places recently, Shenoa & Co, Golda, and one more that I can't remember. If you do a search, you might find a couple threads on the NY Diamond district. I was surprised that the places I went to pushed the good quality GIA stones and didn't even waste time showing me bad EGL stones. All stores admitted that EGL grading is way off from what it should be. Anyway, I wasn't impressed by the prices. Not much of a discount compared to local jewelers.