Well, to say that Tiffany is coach while ACA is hermes in terms of quality means that you don't really know how to assess quality well enough. If really like you said, whiteflash is better quality than Tiffany, then at best it would only be a LV/Chanel (Tiffany) vs. Hermes (ACA) comparison for QUALITY. Tiffany diamonds are known to have high quality diamonds (they are also famous for their quality not just expensive pricing so they can't be coach).
But in terms of overall branding, ACA will only be the coach, while Tiffany is the Hermes. Just so you know it's pretty known that most of the branded bags are of same quality, sometimes the cheaper ones like Coach might even have better quality items than certain items in LV/Chanel/Hermes but just because of the branding, LV/Chanel/Hermes are priced higher. So would you be buying coach (ACA) at 20 to 30% cheaper? I wouldn't..i want them to be 70 to 80% cheaper...this is what I meant by getting value. Again, my analogy is based on overall branding not on quality or pricing itself.
And this is Tiffany. I haven't even started talking about the really good quality and comparable ones like Hearts On Fire, Lazare etc..
I know some ppl might say nobody can tell the difference anyway. Well, yes and no..i do get asked quite often where I get my rings..
But then again, my idea has always been getting what your fiancee wants. I read in your previous post that your fiancee is good with whiteflash or Brian gavin. So ya, that's the more important part I guess.
omg i cant agree more on this. i have been wanting and hinting my bf a tiffany/forevermark/love&co diamond ring. but he bought me something from US cause it's cheaper.