Hello!
I very very unfortunately recently lost my engagement ring
I'm still very sad about it. However, I'm looking around at the replacement I'll get once the insurance check comes in (any day now). It will be a three-stone ring, ~0.8ct in the center and ~0.4ct on each side. I found a center stone that is actually a minor upgrade from the one I had, which was .76ct, VVS1, H, GIA Ex. The new stone that I'm considering is .77ct, IF, G, GIA Ex. I know from my research that GIA is a large target, but unfortunately I can't find an AGS report on any of the diamonds I was looking at on BN. I also discovered the HCA on here, and I used it to narrow down my search. This diamond has an HCA of 1.4. I know that GIA is a large target, and HCA is only an estimator, but given that I'm buying sight-unseen on BN, how confident do you think you'd be that the GIA Ex & HCA 1.4 diamond will be brilliant/fiery/all the good things? Any advice you could give would be greatly appreciated 
EDIT: Here are the specs of the stone I'm considering:
Depth: 62.5%
Table: 55%
Crown Angle: 34.5
Pavilion Angle: 40.8
Culet: None
Girdle: Medium to Slightly Thick
Polish: Excellent
Symmetry: Excellent
I very very unfortunately recently lost my engagement ring
EDIT: Here are the specs of the stone I'm considering:
Depth: 62.5%
Table: 55%
Crown Angle: 34.5
Pavilion Angle: 40.8
Culet: None
Girdle: Medium to Slightly Thick
Polish: Excellent
Symmetry: Excellent