so last weekend i went to New Orleans with my MIL and her friends to the International Jewelry Fair/General Merchandise Show. it was HUGE, and the first time my MIL and I had gone, so we unwittingly started looking on the wrong side, and not for several hours did we get to the quality jewelry material, and by then i was quite tired and not super enthused about dealing with expo vendors.
anyways, of all the hundreds of vendors there, i met exactly ONE jeweler who i felt was honest and upfront about her diamonds and finished pieces. she had beautiful pieces, and several nicer yellow diamonds but even she didn't use GIA certs (of course, none of the vendors did, the closest i got to real certified stones was EGL, blech).
some people had just crappy looking rings that had 'retail' prices of $90,000plus but offered "show prices" of $50,000 with NO CERTS, and when i would ask they'd act like it would be a huge hassle and add cost, like $250 makes any difference when you're spending $50K. ugh, the whole thing just pissed me off, and what made me angrier was that so many people will be duped into thinking their buying quality jewelry at good prices, when the opposite couldn't be more true! not a single vendor had ANY information about their pieces, and they ALL said their melee stones were VS. more like BS.
anyways, this is all just to say that i feel your pain, the nice woman and David are some of the only jewelers i've ever met who appreciate and are not threatened by an educated consumer. and in David's case of course, promote the education here on his forum.