Comparing 3 Diamonds

Hi all,

I'm in the process of buying a diamond for an engagement ring in the 5-6k range.

I've settled on the following characteristics:

• G color
• SI Inclusion
• 1 Carat
• Very Good-Ideal Cut
• Halo setting

I went in person to check out the following (GIA: 1199063116). The stone was nice but had a noticeable black inclusion that could be hidden by the setting. Online I am looking at the following : (GIA: 5181563457 and 6252131713). Is it possible to make any solid conclusions with these data? Which is the best buy? I'm getting hung up about not seeing these in person. Also I'm kind of lost with the depth %s and such because as I understand, some cuts result in a smaller diameter. Obviously I'd want the diameter to be the most pronounced.

Thanks so much