7.84mm f vs2 or 7.96mm G si1?

[Frenchtoast]

Hi guys,
Which would u guys go for?
If both aset and hcas were good??
Exactly the same in terms of optics... Would u go for the better colour and 0.11mm smaller size?

 

[TC1987]

If I wanted whiter, I might go for the F over the G, because the F has both higher clarity and higher color. That little difference in diameter is probably not noticeable.

But who graded them? GIA is most accurate. AGS can be one grade "soft" on color, pretty equivalent on clarity. EGL is almost always 2 grades "soft." If it's an AGS F, and a GIA G, maybe there's not much difference in color, so I might let price or the look of the diamond or the nature of the inclusions decide. I have preferences for table size, crown height, crown angle, and lgf %, too.

 

[SirGuy]

Everything else being the same, personally I'd do F VS2. Everyone has their own tastes, though!

Toast, you might consider keeping these newer follow-up questions in one of your current threads you already started. I think you have four or five going now. Consolidating them would help us keep your thought process and previous tentative selections in mind when considering new options. Otherwise for some it just seems like a fresh question without the background of your color/clarity dilemma to help in answering.

 

[Frenchtoast]

Ah ok and here I was thinking I was being less confusing
Will do!
So actually it would be GIA F and ags G... That same WF G...

 

[diamondseeker2006]

I want to see the idealscope image on the F VS2, please.

 

[drk14]

0.11mm smaller size?

0.11mm is the width of a human hair, or about half the width of a single pixel on your computer monitor. This difference in diameter results in a 3% difference in spread (projected area when viewed face-up). Thus, in my opinion, your decision between these two diamonds should be based on factors other than size. Good luck!

 

[Frenchtoast]

idealscope on the way..
but guys... what if the Si1 is twinning wisps and eye clean... and then the VS 2 F... is apparently eye clean but has a black pinpoint?
gutted that the VS2 F has a black pinpoint..... i wanted to avoid black inclusions .
what do u guys think now?

 

[illinoischristopher]

I haven't been at this very long so i am a novice but i would definitely be more leery of a twinning wisp than a black pinpoint (which at the VS2 GIA level would certainly be invisible to the naked eye).

 

[GreenBling]

I happen to have a comparison video of two diamonds. One faces up larger by around 0.11mm-0.14mm with measurements 8.59-8.6 vs 8.45-8.49. Some people noticed the diff right away some didn't. Question is. Do you?

http://www.youtube.com/watch?v=qk5W7dAniaA&feature=youtube_gdata_player

 

[drk14]

gutted that the VS2 F has a black pinpoint..... i wanted to avoid black inclusions .

Is this a "mind clean" issue for you, or are you worried that black inclusions can't really be totally eye-clean?

For perspective, I just purchased an SI1 diamond, that I was initially very reluctant about because the 40X magnification image provided by the vendor showed a HUGE black crystal inclusion (you can see it near the right point in the image below):


I was initially so put off by it that I almost didn't even short-list this diamond, so I know where you're coming from with the visceral reaction to dark inclusions. And even though the vendor's gemologist assured me it was eye-clean, I didn't really believe them 100%.

Until I saw the diamond in person. Even though I knew exactly where to look for this black crystal, I could not see it at all, even with reading glasses.

Below is a picture I took. It is still magnified on the computer screen, but not 40X. Can you see the inclusion? I can't. Maybe a hint of a shadow at this magnification, or that could be imagination. However, to do this properly, step back 6 feet from the computer monitor (or phone), to approximate the actual size of the diamond -- now, can you see anything that resembles an inclusion?


In real life, it is simply not possible to see the crystal inclusion in this diamond without a loupe or microscope. And even better, if you do use a loupe, the crystal does not even look as dark and menacing IRL as it does in those horrible 40X vendor pictures.

So I'm telling you all of this to try to give you some reassurance, because I almost made the mistake of skipping over a rare and beautiful diamond because of what amounted to a trivial concern about a dark crystal inclusion. And if I understand your situation, the F-VS2 inclusion is a pinpoint, which is even smaller than a crystal.

 

[drk14]

I happen to have a comparison video of two diamonds. One faces up larger by around 0.11mm-0.14mm with measurements 8.59-8.6 vs 8.45-8.49. Some people noticed the diff right away some didn't. Question is. Do you?

Hi GreenBling (a.k.a. Frenchtoast???),
You're going to want to be careful in using that video to compare spread, because the apparent size in the video is very sensitive to how far the diamond is held from the camera. For example, in the frame below, the diamond on the right looks about 15%-20% larger (in area) than the one on the left, which is very noticeable. However, the stone dimensions indicate that the actual sizes should differ by only 3% in area. The explanation is in the bottom video frame, in which it is clear the the diamond on the right was held closer to the camera (thus making it appear larger).



Now, I'm not insinuating by any means that this was done intentionally, just that it can be hard to compare diamonds under reproducible conditions (and in fact, as I write this, I don't even know which of the two stones Jonathan was recommending in the video, because I played it without sound).

Another factor here is that it is easier to perceive slight size differences when looking at magnified images (or videos). Thus, a more fair comparison would be when the two diamonds are in the tray (reducing the disparity in distance to the camera), and when the video is shrunken down a bit to get the diamonds to be more realistic in size. Thus, if you want to poll the forum, a better comparison is this one:


The video is great for comparing differences in brightness and scintillation, however. I just wouldn't want you to base your decision on the wrong information.

 

[diamondseeker2006]

Don't eliminate based on a black pinpoint. Wait and get the idealscope image, and ask for a magnified image of the top of the stone if you haven't already. Depending on the placement of the pinpoint, it certainly could be eyeclean.

 

[drk14]

I happen to have a comparison video of two diamonds. One faces up larger by around 0.11mm-0.14mm with measurements 8.59-8.6 vs 8.45-8.49. Some people noticed the diff right away some didn't. Question is. Do you?

Hi GreenBling (a.k.a. Frenchtoast???),
You're going to want to be careful in using that video to compare spread, because the apparent size in the video is very sensitive to how far the diamond is held from the camera.

Nevermind, I just figured out that this video had nothing to do with OP's diamonds. I guess the username switch-up should have clued me in!

I think my comments are still valid, though.


And I also agree with Diamondseeker2006: Don't eliminate based on the pinpoint, unless it is important to you to have a "mind-clean" diamond. It's a VS2 diamond, so it is very likely that it will be eye-clean.