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Need help with Idealscope image (second one)

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Viphan01

Rough_Rock
Joined
Jul 3, 2007
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55
Here is the second one.

1083961idealscopesmall.jpg
 
Can you make the picture larger?
 
I''m going to. Thanks
 
Here it is...The second one on my next reply

1047591-IdealScopelarger.JPG
 
The second one

1083961idealscopelarger.jpg
 
I would say the second one as it has better defined lines. Exactly what are the numbers on the GIA report in regards to the crown, pavilion, etc.
 
Here are the numbers for the first one:
1.71 VVS1 AGS0
7.66x7.69x4.77
Table: 54.7%
Total depth: 62.2%
Crown Angle: 35
Pav. Angle: 40.8
Crown height: 15.8%
LG% I don''t know how to calculate this on AGS cert. assuming it is >75% since they are fatter
Girdle: 1.35-3.60 (fa)



Numbers for the second one:
1.75 VS1 GIA Ideal cut
7.74X7.76X4.78
Table: 56%
Total Depth: 61.7%
Crown Angle: 35
Pav. Angle: 40.8
Crown height: 15.5%
LG%: 75%
Girdle: Medium (fa)
 
Go to https://www.pricescope.com/cutadviser.asp and enter your information in. You want the HCA to be between 1-2. Hope this helps.
 
Very nice

I''d say the second one has better optical symmetry

I noticed both stones'' crown angles are averaging 35.0? Ideally they should be between 34 - 35 for your Pav angle.
 
Is Better optical symmetry=better performance? What do you think about light leakage? From this idealscope, can you tell which one has better light return? HCA for the first one=1.6 and the second one=1.5.
 
Date: 7/16/2007 8:54:07 PM
Author: Viphan01
Is Better optical symmetry=better performance? What do you think about light leakage? From this idealscope, can you tell which one has better light return? HCA for the first one=1.6 and the second one=1.5.
Click to expand...
Light leakage on both are minimal. Both are also excellent in the light return department. As long as the HCA is below 2, you are in good shape. A lesser HCA does not mean that it is a better performer.

Personally, I like the fatter arrows effect (lower LGF%). Others prefer the thinner arrows effect (higher LGF%). The looks are slightly different but it does not mean that one is more sparkly than the other. Both are beautiful - it is a matter taste. I am guessing more fire on the fatter arrowed stone for a few reasons: slightly deeper, smaller table, lower LGF% and higher crown height.

On the other hand, looking at the stats, I also like the other stone for the following reasons:
1. Why overpay for VVS1? VS1 is perfectly eyeclean
2. Slightly less depth for the GIA stone = slightly bigger stone
 
This is not about beauty - they are both exceptional.

It should be an economic decision now
 
Chrono,

I was going to post a message for you noticing that you are online. Thanks for replying.
The vendor keeps convincing me that when he compare the two next to each others, the VVS1 stands out more. My gut feeling is to go with the VS1 because of the beautiful optical symmetry. I got so confused but I have to make a decision today. Personally, would you go with the VVS1?
 
Date: 7/17/2007 8:19:56 AM
Author: Garry H (Cut Nut)
This is not about beauty - they are both exceptional.

It should be an economic decision now
Click to expand...
Gary,

I was hoping you would respond...thought your choice would be the VS1:-). So you don''t think one will out perform the other based on the Idealscope and the numbers?
 
Both are gorgeous stones. Both are high performers. Now it comes to a matter of taste - it appears the vendor like the fatter arrow look (low LGF%) as do I. Would you? I don't know. I would think there would be a very large difference in cost between the VVS1 and VS1. That ultimately would sway my decision since both stones are comparable.
 
Date: 7/17/2007 8:07:50 AM
Author: Chrono

Personally, I like the fatter arrows effect (lower LGF%). Others prefer the thinner arrows effect (higher LGF%). The looks are slightly different but it does not mean that one is more sparkly than the other. Both are beautiful - it is a matter taste. I am guessing more fire on the fatter arrowed stone for a few reasons: slightly deeper, smaller table, lower LGF% and higher crown height.
Click to expand...
Chrono,

Just read your comment again. I thought the fatter arrowed stone is the VS1 (fatter and shorter)? The thinner arrowed stone is the VVS1 with smaller table (54.7vs 56), higher crown height (15.8%vs15.5%) but I think it is higher in LGF% (the Vs1 is 75%)? Please educate me!
 
My apologies for the confusion; your IScope pics stated both as 2nd picture so I just hazarded a guess that the thinner arrowed one is the AGS and the fatter one is the GIA since they were posted in that order (matching the way their stats were posted). Please clarify.
 
Gary,

Are the dark (black) areas in the center of the VVS1 (the less defined one) should be a concern?
 
The first enlarged picture in this posting is the VVS1 (attachment 1047591). The second enlarged picture in this posting is the VS1 (attachment 1083961).
 
In that case, I'd take the VS1 in a heartbeat!

Fatter arrows usually means lower LGF%, so if the cert is accurate, the AGS's LGF% would be GREATER than 75%.
The GIA has fat arrows (lower LGF%) and the AGS has thin arrows (higher LGF%)
The shorter LGF gives off chunkier sized fire while the longer LGF gives off longer splinters of light.

Quoted by poster Junior35, who is in the trade,
Traditionally, before the discovery of hearts and arrows ,the combination of 80/55 was widely accepted.That is 80% lgf and 55% star facets. Later,it was noticed that shorter (e.g. 75%) lgf produce fatter arrows.So now we get to the sensitive area of taste. I personally like slightly fatter arrows (77%)(see attached pic) .But it seems that most of the industry likes 80%+(e.g.) thinner arrows. It's a matter of taste.There is no right or wrong.

The GIA VS1 stone also has very good stats on paper, great HCA score, pretty IScope picture, and a very reasonable price (VS versus VVS). Fat arrows just seals the deal.
 
I remember your postings about fatter and thinner arrows. Yes, the VS1 has 75% LGF but the table is larger (56%) and the crown height is slightly shorter (15.5%). The VS1 also has a more well defined idealscope and better optical symmetry. Just one to confirm that would be your choice:-).

Thanks, Chrono
 
Date: 7/17/2007 8:45:47 AM
Author: Chrono
In that case, I'd take the VS1 in a heartbeat!

Fatter arrows usually means lower LGF%, so if the cert is accurate, the AGS's LGF% would be GREATER than 75%.
The GIA has fat arrows (lower LGF%) and the AGS has thin arrows (higher LGF%)

Quoted by poster Junior35, who is in the trade,
Traditionally, before the discovery of hearts and arrows ,the combination of 80/55 was widely accepted.That is 80% lgf and 55% star facets. Later,it was noticed that shorter (e.g. 75%) lgf produce fatter arrows.So now we get to the sensitive area of taste. I personally like slightly fatter arrows (77%)(see attached pic) .But it seems that most of the industry likes 80%+(e.g.) thinner arrows. It's a matter of taste.There is no right or wrong.
Click to expand...
Chrono,

One more question if you don't mind. The VS1 has the combo of 75%/50% (star facets), is it ok? The VVS1 actually has a 80%/49% combo.
 
The 75/50 combo is more my cup of tea. There may be others who prefer the 80/49 combo.
 
My vote would also be for the second one!
 
On paper, I would go the the VS1 instead of the VVS. However since it sounds as if they might have slightly different looks, you might see if you can have both shipped to you or to an appraiser near you so that you can compare them side by side and choose.
 
I did try. They won''t ship both to me or an appraiser. The difference in price is $3000. Honestly, I never purchased a VS before (all VVS) and although I love the VS too much, I just wonder if VVS would give me peace of mind:-)
 
Date: 7/17/2007 10:54:11 AM
Author: Viphan01
I did try. They won''t ship both to me or an appraiser. The difference in price is $3000. Honestly, I never purchased a VS before (all VVS) and although I love the VS too much, I just wonder if VVS would give me peace of mind:-)
Click to expand...
I have a VS1, and I can''t see anything with a loupe.
2.gif
 
Peace of mind is important.

But, $3k can buy an awfully nice setting, or a great escape weekend... If the vendor has a good return policy, maybe you could start with the VS, and if, once you received it and looked at it every which way from Sunday, you still weren''t comfortable with the VS you could return it. I''d be REALLY surprised if the VS wasn''t clear enough for you unless you are one of those who simply wants the "almost flawless" mental knowledge. I''d take the bet that you certainly won''t see any imperfections in the VS. If that "almost flawless" is important to you (which it is to some people), go for the VVS.
 
I have a VS1 emerald cut (which shows all the teeny tiny inclusions due to its step cut) and I can''t see anything with a loupe. I even have trouble spotting it under a microscope.
 
$3k price difference makes this one easy go with the cheaper one.
If everything was equal Id have a slight preference to the 80/49 but not 3k worth.
 
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