Which diamond should I buy?

[aaapowercat]

Diamond #1
https://www.jamesallen.com/loose-di...h-color-si2-clarity-excellent-cut-sku-2612806
Price: $3,090 (have it on hold) HCA score: 1.0. Attached idealscope image

Diamond #2
https://www.jamesallen.com/loose-di...i-color-si2-clarity-excellent-cut-sku-3050442
Price: $3,800
I like the size, I is the lowest color I'm willing to go, cut seems to be better than diamond #1, and clarity seems like it's eye clean? I'm worried about if it's hazy. Don't have idealscope image

Diamond #3
In a brick and mortar store, not GIA certified. The grades they have so far are 1 carat, F color, SI1, and Very good cut. They're taking it to another jeweler with a microscope to get all the other dimension numbers, culet, fluorescence etc. I saw it in person and it's definitely whiter and more sparkly when next to a GIA color G, SI1 and VG cut diamond. They're offering it for $3,800 without GIA cert.

I'm having it put in a white gold setting from the brick and mortar store very similar to this one: http://www.nataliek.com/media/catal...8d27136e95/n/k/nk19582we-w_three_qrtr_1_3.jpg

Which diamond is the best deal? I value both size and quality equally. Is it worth sacrificing excellent cut to very good if the diamond is 0.1 carat bigger and better color? Other diamond recommendations are welcome! Budget is up to $4200 for round brilliant diamond, I color, 0.9+ carat, and eye-clean clarity

 

[Dancing Fire]

Diamond #3
In a brick and mortar store, not GIA certified. The grades they have so far are 1 carat, F color, SI1, and Very good cut. They're taking it to another jeweler with a microscope to get all the other dimension numbers, culet, fluorescence etc. I saw it in person and it's definitely whiter and more sparkly when next to a GIA color G, SI1 and VG cut diamond. They're offering it for $3,800 without GIA cert.

They would need a sarin machine to scan the stone, not a microscope. A well cut 1ct stone should measure close to 6.45-6.47 mm in diameter.

 

[aaapowercat]

Do you have any recommendations which diamond is the best value?

 

[Dancing Fire]

Do you have any recommendations which diamond is the best value?

The G SI1 sounds reasonable but no lab report so we really don't know anything about the stone.