Which diamonds are worth pursuing? Need help...

[rook02]

I have done my fair share of research and am really close to buying. I would like help in deciding which of the following diamonds are worth pursuing. I am confused about the color vs. clarity. I know with the SI2s, some may not be eye clean and that is something I have to ask the vendor. But I would greatly appreciate any help regarding which of the following diamonds I should inquire more about.

These are all round cut

Carat Cut Color Clarity Flurorescence HCA
1.85 Very Good J VS2 Medium 2.6
1.77 Excellent J VS2 None 1
2.01 Excellent J SI2 Strong 1
1.74 Excellent J SI1 None 1.5
1.82 Excellent J SI1 None 2.5
1.78 Excellent J SI1 None 1.7
1.8 Excellent I SI2 None 3.9
2.01 Excellent I SI2 Medium Yellow 2.8
1.79 Very Good I SI2 Faint 0.9
1.75 Excellent F SI2 Medium Blue 0.8
1.73 Excellent I SI2 None 1.9
1.75 Excellent E SI2 Medium Blue 1.2

Thanks for your help.

 

[TC1987]

Generally, "I" color grade is where people start seeing tint, mostly from the side, but some may pick out "warmer" diamonds face-up. If you want white, stay H or above. In that size range, G might be your cutoff because larger diamonds tend to show tine more readily, due to their mass.

HCA score of 2 or less is usually what's recommended. 2-3 might be okay, depending on whether or not you like the look of the diamond, and the price. 3 or more, probably avoid.

Fluorescence: Avoid yellow if you are looking for a bright white diamond. Blue is good, unless it makes the diamond look milky or too blue or lilac.

dimensions (PS cheat sheet):

depth - 60 - 62% - although my personal preference is to allow up to 62.4%
table - 54- 57%
crown angle - 34- 35 degrees
pavilion angle - 40.6- 41 degrees
girdle - avoid extremes, look for thin to slightly thick, thin to medium etc
polish and symmetry - very good and above

note - with crown and pavilion angles at the shallower ends ( CA 34- PA 40.6) and steeper ( CA 35- PA 41) check to make sure these angles complement in that particular diamond - eyeballs, Idealscope, trusted vendor input - check as appropriate!