Hello all, I've been looking online a lot for our upcoming engagement ring purchase.. and decided it's just too hard to decide what we really like without seeing in person. Originally we thought we'd want a plain band and a round solitaire! After going in to a Shane Co. to view diamonds and compare colors/clarities/sizes we discovered that we'd like a setting similar to below much better. It's priced at about $1275 if I remember correctly, .57 ct., 14k yg. They showed us a couple diamonds as well, and the "best" of the bunch that he was trying to sell to us was a GIA cert., .7 ct., round, H, SI2, "Shane Classic". It was pretty in person and we might have been sold on it, but I came home and checked the HCA calculator and it rated a 4.-something.
So my questions are 1. are the diamonds that I can find on the various places mentioned on PS that rate better on the HCA tool w/ similar or better specs REALLY better than the one I saw at Shane Co.? It's hard for me to tell by looking at pictures online!
2. If the answer to the question above is yes, should I order I diamond online and have Shane Co. set it for me in this setting? I have not been able to find a setting like this one for anything less than $1800 or so online...

So my questions are 1. are the diamonds that I can find on the various places mentioned on PS that rate better on the HCA tool w/ similar or better specs REALLY better than the one I saw at Shane Co.? It's hard for me to tell by looking at pictures online!
2. If the answer to the question above is yes, should I order I diamond online and have Shane Co. set it for me in this setting? I have not been able to find a setting like this one for anything less than $1800 or so online...
